15802121832 has 64 divisors (see below), whose sum is σ = 45279198720. Its totient is φ = 4501864128.

The previous prime is 15802121831. The next prime is 15802121833. The reversal of 15802121832 is 23812120851.

It is an interprime number because it is at equal distance from previous prime (15802121831) and next prime (15802121833).

It is a junction number, because it is equal to n+sod(n) for n = 15802121793 and 15802121802.

It is not an unprimeable number, because it can be changed into a prime (15802121831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77238 + ... + 193829.

It is an arithmetic number, because the mean of its divisors is an integer number (707487480).

Almost surely, 2^15802121832 is an apocalyptic number.

15802121832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15802121832 is an abundant number, since it is smaller than the sum of its proper divisors (29477076888).

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

15802121832 is a wasteful number, since it uses less digits than its factorization.

15802121832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271430 (or 271426 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The spelling of 15802121832 in words is "fifteen billion, eight hundred two million, one hundred twenty-one thousand, eight hundred thirty-two".