13155210033440 has 96 divisors (see below), whose sum is σ = 33796759644144. Its totient is φ = 4818696929280.

The previous prime is 13155210033439. The next prime is 13155210033487. The reversal of 13155210033440 is 4433001255131.

It can be written as a sum of positive squares in 8 ways, for example, as 12644311021456 + 510899011984 = 3555884^2 + 714772^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 13155210033397 and 13155210033406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65257121 + ... + 65458400.

Almost surely, 2^{13155210033440} is an apocalyptic number.

13155210033440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13155210033440 is an abundant number, since it is smaller than the sum of its proper divisors (20641549610704).

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

13155210033440 is a wasteful number, since it uses less digits than its factorization.

13155210033440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130715590 (or 130715582 counting only the distinct ones).

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

Adding to 13155210033440 its reverse (4433001255131), we get a palindrome (17588211288571).

The spelling of 13155210033440 in words is "thirteen trillion, one hundred fifty-five billion, two hundred ten million, thirty-three thousand, four hundred forty".