15642131336 has 32 divisors (see below), whose sum is σ = 31590552000. Its totient is φ = 7218192960.

The previous prime is 15642131321. The next prime is 15642131353. The reversal of 15642131336 is 63313124651.

It is a junction number, because it is equal to n+sod(n) for n = 15642131296 and 15642131305.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 885551 + ... + 903041.

It is an arithmetic number, because the mean of its divisors is an integer number (987204750).

Almost surely, 2^15642131336 is an apocalyptic number.

It is an amenable number.

15642131336 is an abundant number, since it is smaller than the sum of its proper divisors (15948420664).

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

15642131336 is a wasteful number, since it uses less digits than its factorization.

15642131336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26109 (or 26105 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

Adding to 15642131336 its reverse (63313124651), we get a palindrome (78955255987).

The spelling of 15642131336 in words is "fifteen billion, six hundred forty-two million, one hundred thirty-one thousand, three hundred thirty-six".