15642677545 has 32 divisors (see below), whose sum is σ = 21387608064. Its totient is φ = 10871889600.

The previous prime is 15642677521. The next prime is 15642677563. The reversal of 15642677545 is 54577624651.

It is not a de Polignac number, because 15642677545 - 2²⁵ = 15609123113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15642677492 and 15642677501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1542040 + ... + 1552150.

It is an arithmetic number, because the mean of its divisors is an integer number (668362752).

Almost surely, 2^15642677545 is an apocalyptic number.

It is an amenable number.

15642677545 is a deficient number, since it is larger than the sum of its proper divisors (5744930519).

15642677545 is a wasteful number, since it uses less digits than its factorization.

15642677545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11373.

The product of its digits is 7056000, while the sum is 52.

The spelling of 15642677545 in words is "fifteen billion, six hundred forty-two million, six hundred seventy-seven thousand, five hundred forty-five".