2539388926657 has 16 divisors (see below), whose sum is σ = 2845537558272. Its totient is φ = 2246357317120.

The previous prime is 2539388926609. The next prime is 2539388926703. The reversal of 2539388926657 is 7566298839352.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2539388926657 - 2²⁷ = 2539254708929 is a prime.

It is a super-2 number, since 2×2539388926657² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2539388926657.

It is not an unprimeable number, because it can be changed into a prime (2539388966657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14106448 + ... + 14285329.

It is an arithmetic number, because the mean of its divisors is an integer number (177846097392).

Almost surely, 2^{2539388926657} is an apocalyptic number.

It is an amenable number.

2539388926657 is a deficient number, since it is larger than the sum of its proper divisors (306148631615).

2539388926657 is a wasteful number, since it uses less digits than its factorization.

2539388926657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28392008.

The product of its digits is 1175731200, while the sum is 73.

The spelling of 2539388926657 in words is "two trillion, five hundred thirty-nine billion, three hundred eighty-eight million, nine hundred twenty-six thousand, six hundred fifty-seven".