127920930477 has 16 divisors (see below), whose sum is σ = 171386280000. Its totient is φ = 84868499072.

The previous prime is 127920930461. The next prime is 127920930479. The reversal of 127920930477 is 774039029721.

It is a cyclic number.

It is not a de Polignac number, because 127920930477 - 2⁴ = 127920930461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127920930479) 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 15 ways as a sum of consecutive naturals, for example, 1263274 + ... + 1360772.

It is an arithmetic number, because the mean of its divisors is an integer number (10711642500).

Almost surely, 2^127920930477 is an apocalyptic number.

It is an amenable number.

127920930477 is a deficient number, since it is larger than the sum of its proper divisors (43465349523).

127920930477 is a wasteful number, since it uses less digits than its factorization.

127920930477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99612.

The product of its (nonzero) digits is 1333584, while the sum is 51.

The spelling of 127920930477 in words is "one hundred twenty-seven billion, nine hundred twenty million, nine hundred thirty thousand, four hundred seventy-seven".