15642045555 has 32 divisors (see below), whose sum is σ = 25685792064. Its totient is φ = 8125218816.

The previous prime is 15642045547. The next prime is 15642045599. The reversal of 15642045555 is 55554024651.

It is not a de Polignac number, because 15642045555 - 2³ = 15642045547 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37107 + ... + 180723.

It is an arithmetic number, because the mean of its divisors is an integer number (802681002).

Almost surely, 2^15642045555 is an apocalyptic number.

15642045555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15642045555 is a deficient number, since it is larger than the sum of its proper divisors (10043746509).

15642045555 is a wasteful number, since it uses less digits than its factorization.

15642045555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143815.

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 15642045555 in words is "fifteen billion, six hundred forty-two million, forty-five thousand, five hundred fifty-five".