127121527857 has 16 divisors (see below), whose sum is σ = 175123179008. Its totient is φ = 81938787840.

The previous prime is 127121527831. The next prime is 127121527877. The reversal of 127121527857 is 758725121721.

It is not a de Polignac number, because 127121527857 - 2¹⁵ = 127121495089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127121527817) 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, 523648 + ... + 726945.

It is an arithmetic number, because the mean of its divisors is an integer number (10945198688).

Almost surely, 2^127121527857 is an apocalyptic number.

It is an amenable number.

127121527857 is a deficient number, since it is larger than the sum of its proper divisors (48001651151).

127121527857 is a wasteful number, since it uses less digits than its factorization.

127121527857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251720.

The product of its digits is 548800, while the sum is 48.

The spelling of 127121527857 in words is "one hundred twenty-seven billion, one hundred twenty-one million, five hundred twenty-seven thousand, eight hundred fifty-seven".