77761060755 has 64 divisors (see below), whose sum is σ = 148465336320. Its totient is φ = 33981399936.

The previous prime is 77761060747. The next prime is 77761060777. The reversal of 77761060755 is 55706016777.

It is a happy number.

It is not a de Polignac number, because 77761060755 - 2³ = 77761060747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77761060698 and 77761060707.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4296916 + ... + 4314974.

It is an arithmetic number, because the mean of its divisors is an integer number (2319770880).

Almost surely, 2^77761060755 is an apocalyptic number.

77761060755 is a deficient number, since it is larger than the sum of its proper divisors (70704275565).

77761060755 is a wasteful number, since it uses less digits than its factorization.

77761060755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19880.

The product of its (nonzero) digits is 2160900, while the sum is 51.

The spelling of 77761060755 in words is "seventy-seven billion, seven hundred sixty-one million, sixty thousand, seven hundred fifty-five".