15878955045 has 16 divisors (see below), whose sum is σ = 25409584512. Its totient is φ = 8467690560.

The previous prime is 15878955031. The next prime is 15878955061. The reversal of 15878955045 is 54055987851.

It is not a de Polignac number, because 15878955045 - 2⁸ = 15878954789 is a prime.

It is a super-2 number, since 2×15878955045² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60979 + ... + 188351.

It is an arithmetic number, because the mean of its divisors is an integer number (1588099032).

Almost surely, 2^15878955045 is an apocalyptic number.

15878955045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15878955045 is a deficient number, since it is larger than the sum of its proper divisors (9530629467).

15878955045 is a wasteful number, since it uses less digits than its factorization.

15878955045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135692.

The product of its (nonzero) digits is 10080000, while the sum is 57.

The spelling of 15878955045 in words is "fifteen billion, eight hundred seventy-eight million, nine hundred fifty-five thousand, forty-five".