127706520051 has 64 divisors (see below), whose sum is σ = 212850892800. Its totient is φ = 75013696800.

The previous prime is 127706520043. The next prime is 127706520101. The reversal of 127706520051 is 150025607721.

127706520051 is a `hidden beast` number, since 12 + 7 + 70 + 6 + 520 + 0 + 51 = 666.

It is not a de Polignac number, because 127706520051 - 2³ = 127706520043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 127706519988 and 127706520015.

It is not an unprimeable number, because it can be changed into a prime (127706520001) 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, 1192810 + ... + 1295456.

It is an arithmetic number, because the mean of its divisors is an integer number (3325795200).

Almost surely, 2^127706520051 is an apocalyptic number.

127706520051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

127706520051 is a deficient number, since it is larger than the sum of its proper divisors (85144372749).

127706520051 is a wasteful number, since it uses less digits than its factorization.

127706520051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102797 (or 102791 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The spelling of 127706520051 in words is "one hundred twenty-seven billion, seven hundred six million, five hundred twenty thousand, fifty-one".