76777766660 has 24 divisors (see below), whose sum is σ = 184266640320. Its totient is φ = 26323805664.

The previous prime is 76777766633. The next prime is 76777766701. The reversal of 76777766660 is 6666777767.

It is a super-3 number, since 3×76777766660³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274206170 + ... + 274206449.

It is an arithmetic number, because the mean of its divisors is an integer number (7677776680).

Almost surely, 2^76777766660 is an apocalyptic number.

76777766660 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

76777766660 is an abundant number, since it is smaller than the sum of its proper divisors (107488873660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76777766660 is a wasteful number, since it uses less digits than its factorization.

76777766660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548412635 (or 548412633 counting only the distinct ones).

The product of its (nonzero) digits is 130691232, while the sum is 65.

The spelling of 76777766660 in words is "seventy-six billion, seven hundred seventy-seven million, seven hundred sixty-six thousand, six hundred sixty".