2139095047257 has 64 divisors (see below), whose sum is σ = 3641094144000. Its totient is φ = 1215814691520.

The previous prime is 2139095047223. The next prime is 2139095047273. The reversal of 2139095047257 is 7527405909312.

2139095047257 is a `hidden beast` number, since 2 + 1 + 39 + 0 + 95 + 0 + 472 + 57 = 666.

It is not a de Polignac number, because 2139095047257 - 2²⁰ = 2139093998681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2139095047057) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 155213707 + ... + 155227487.

It is an arithmetic number, because the mean of its divisors is an integer number (56892096000).

Almost surely, 2^{2139095047257} is an apocalyptic number.

2139095047257 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2139095047257 is a deficient number, since it is larger than the sum of its proper divisors (1501999096743).

2139095047257 is a wasteful number, since it uses less digits than its factorization.

2139095047257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18123 (or 18117 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 2139095047257 in words is "two trillion, one hundred thirty-nine billion, ninety-five million, forty-seven thousand, two hundred fifty-seven".