120777657215751 has 12 divisors (see below), whose sum is σ = 183638543135320. Its totient is φ = 76280625609840.

The previous prime is 120777657215741. The next prime is 120777657215843. The reversal of 120777657215751 is 157512756777021.

It is a happy number.

120777657215751 is a `hidden beast` number, since 1 + 2 + 0 + 7 + 7 + 7 + 6 + 57 + 2 + 1 + 575 + 1 = 666.

It is not a de Polignac number, because 120777657215751 - 2¹⁰ = 120777657214727 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 (120777657215741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353151044320 + ... + 353151044661.

Almost surely, 2^{120777657215751} is an apocalyptic number.

120777657215751 is a deficient number, since it is larger than the sum of its proper divisors (62860885919569).

120777657215751 is a wasteful number, since it uses less digits than its factorization.

120777657215751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706302089006 (or 706302089003 counting only the distinct ones).

The product of its (nonzero) digits is 50421000, while the sum is 63.

The spelling of 120777657215751 in words is "one hundred twenty trillion, seven hundred seventy-seven billion, six hundred fifty-seven million, two hundred fifteen thousand, seven hundred fifty-one".