15138900138775 has 24 divisors (see below), whose sum is σ = 22715983271520. Its totient is φ = 9770315381760.

The previous prime is 15138900138697. The next prime is 15138900138793. The reversal of 15138900138775 is 57783100983151.

It is not a de Polignac number, because 15138900138775 - 2³¹ = 15136752655127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2544349990 + ... + 2544355939.

It is an arithmetic number, because the mean of its divisors is an integer number (946499302980).

Almost surely, 2^{15138900138775} is an apocalyptic number.

15138900138775 is a deficient number, since it is larger than the sum of its proper divisors (7577083132745).

15138900138775 is a wasteful number, since it uses less digits than its factorization.

15138900138775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088705963 (or 5088705958 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 58.

The spelling of 15138900138775 in words is "fifteen trillion, one hundred thirty-eight billion, nine hundred million, one hundred thirty-eight thousand, seven hundred seventy-five".