127904951117 has 4 divisors (see below), whose sum is σ = 127913348640. Its totient is φ = 127896553596.

The previous prime is 127904951099. The next prime is 127904951123. The reversal of 127904951117 is 711159409721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 127904951117 - 2²² = 127900756813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127904921117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4175873 + ... + 4206390.

It is an arithmetic number, because the mean of its divisors is an integer number (31978337160).

Almost surely, 2^127904951117 is an apocalyptic number.

It is an amenable number.

127904951117 is a deficient number, since it is larger than the sum of its proper divisors (8397523).

127904951117 is an equidigital number, since it uses as much as digits as its factorization.

127904951117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8397522.

The product of its (nonzero) digits is 158760, while the sum is 47.

The spelling of 127904951117 in words is "one hundred twenty-seven billion, nine hundred four million, nine hundred fifty-one thousand, one hundred seventeen".