14521636420 has 48 divisors (see below), whose sum is σ = 31910660208. Its totient is φ = 5545013760.

The previous prime is 14521636417. The next prime is 14521636421. The reversal of 14521636420 is 2463612541.

It can be written as a sum of positive squares in 8 ways, for example, as 4270883904 + 10250752516 = 65352^2 + 101246^2 .

It is not an unprimeable number, because it can be changed into a prime (14521636421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145911 + ... + 224350.

It is an arithmetic number, because the mean of its divisors is an integer number (664805421).

Almost surely, 2^14521636420 is an apocalyptic number.

14521636420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14521636420 is an abundant number, since it is smaller than the sum of its proper divisors (17389023788).

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

14521636420 is a wasteful number, since it uses less digits than its factorization.

14521636420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370360 (or 370358 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 14521636420 in words is "fourteen billion, five hundred twenty-one million, six hundred thirty-six thousand, four hundred twenty".