15632021652 has 48 divisors (see below), whose sum is σ = 39866766912. Its totient is φ = 4738060800.

The previous prime is 15632021651. The next prime is 15632021681. The reversal of 15632021652 is 25612023651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15632021651) 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, 737349 + ... + 758252.

It is an arithmetic number, because the mean of its divisors is an integer number (830557644).

Almost surely, 2^15632021652 is an apocalyptic number.

15632021652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15632021652 is an abundant number, since it is smaller than the sum of its proper divisors (24234745260).

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

15632021652 is a wasteful number, since it uses less digits than its factorization.

15632021652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495688 (or 1495686 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 15632021652 in words is "fifteen billion, six hundred thirty-two million, twenty-one thousand, six hundred fifty-two".