15791157566636 has 6 divisors (see below), whose sum is σ = 27634525741620. Its totient is φ = 7895578783316.

The previous prime is 15791157566623. The next prime is 15791157566669. The reversal of 15791157566636 is 63666575119751.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1973894695826 + ... + 1973894695833.

It is an arithmetic number, because the mean of its divisors is an integer number (4605754290270).

Almost surely, 2^{15791157566636} is an apocalyptic number.

It is an amenable number.

15791157566636 is a deficient number, since it is larger than the sum of its proper divisors (11843368174984).

15791157566636 is a wasteful number, since it uses less digits than its factorization.

15791157566636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3947789391663 (or 3947789391661 counting only the distinct ones).

The product of its digits is 214326000, while the sum is 68.

The spelling of 15791157566636 in words is "fifteen trillion, seven hundred ninety-one billion, one hundred fifty-seven million, five hundred sixty-six thousand, six hundred thirty-six".