15040000138765 has 32 divisors (see below), whose sum is σ = 20711560446720. Its totient is φ = 10270537534464.

The previous prime is 15040000138747. The next prime is 15040000138771. The reversal of 15040000138765 is 56783100004051.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 15040000138765 - 2²⁹ = 15039463267853 is a prime.

It is a congruent number.

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, 22425594 + ... + 23086516.

It is an arithmetic number, because the mean of its divisors is an integer number (647236263960).

Almost surely, 2^{15040000138765} is an apocalyptic number.

It is an amenable number.

15040000138765 is a deficient number, since it is larger than the sum of its proper divisors (5671560307955).

15040000138765 is a wasteful number, since it uses less digits than its factorization.

15040000138765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663621.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 15040000138765 in words is "fifteen trillion, forty billion, one hundred thirty-eight thousand, seven hundred sixty-five".