15986403065764 has 12 divisors (see below), whose sum is σ = 28147838527984. Its totient is φ = 7944163486344.

The previous prime is 15986403065761. The next prime is 15986403065771. The reversal of 15986403065764 is 46756030468951.

It is a junction number, because it is equal to n+sod(n) for n = 15986403065696 and 15986403065705.

It is not an unprimeable number, because it can be changed into a prime (15986403065761) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 12259510902 + ... + 12259512205.

Almost surely, 2^{15986403065764} is an apocalyptic number.

It is an amenable number.

15986403065764 is a deficient number, since it is larger than the sum of its proper divisors (12161435462220).

15986403065764 is a wasteful number, since it uses less digits than its factorization.

15986403065764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24519023274 (or 24519023272 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 64.

The spelling of 15986403065764 in words is "fifteen trillion, nine hundred eighty-six billion, four hundred three million, sixty-five thousand, seven hundred sixty-four".