15311666645 has 16 divisors (see below), whose sum is σ = 20735550720. Its totient is φ = 10751764800.

The previous prime is 15311666639. The next prime is 15311666647. The reversal of 15311666645 is 54666611351.

It is not a de Polignac number, because 15311666645 - 2⁸ = 15311666389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15311666596 and 15311666605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15311666647) 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, 4798301 + ... + 4801490.

It is an arithmetic number, because the mean of its divisors is an integer number (1295971920).

Almost surely, 2^15311666645 is an apocalyptic number.

It is an amenable number.

15311666645 is a deficient number, since it is larger than the sum of its proper divisors (5423884075).

15311666645 is a wasteful number, since it uses less digits than its factorization.

15311666645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599836.

The product of its digits is 388800, while the sum is 44.

The spelling of 15311666645 in words is "fifteen billion, three hundred eleven million, six hundred sixty-six thousand, six hundred forty-five".