1213553340140 has 192 divisors, whose sum is σ = 2712105123840. Its totient is φ = 455486042880.

The previous prime is 1213553340053. The next prime is 1213553340157. The reversal of 1213553340140 is 410433553121.

It is a junction number, because it is equal to n+sod(n) for n = 1213553340097 and 1213553340106.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1320514601 + ... + 1320515519.

It is an arithmetic number, because the mean of its divisors is an integer number (14125547520).

Almost surely, 2^{1213553340140} is an apocalyptic number.

1213553340140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213553340140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1356052561920).

1213553340140 is an abundant number, since it is smaller than the sum of its proper divisors (1498551783700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213553340140 is a wasteful number, since it uses less digits than its factorization.

1213553340140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 1213553340140 its reverse (410433553121), we get a palindrome (1623986893261).

The spelling of 1213553340140 in words is "one trillion, two hundred thirteen billion, five hundred fifty-three million, three hundred forty thousand, one hundred forty".