77627911860 has 144 divisors (see below), whose sum is σ = 236919586176. Its totient is φ = 20573796096.

The previous prime is 77627911843. The next prime is 77627911897. The reversal of 77627911860 is 6811972677.

77627911860 is a `hidden beast` number, since 7 + 7 + 627 + 9 + 1 + 1 + 8 + 6 + 0 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 77627911797 and 77627911806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30357702 + ... + 30360258.

It is an arithmetic number, because the mean of its divisors is an integer number (1645274904).

Almost surely, 2^77627911860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77627911860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118459793088).

77627911860 is an abundant number, since it is smaller than the sum of its proper divisors (159291674316).

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

77627911860 is a wasteful number, since it uses less digits than its factorization.

77627911860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542 (or 3537 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 54.

The spelling of 77627911860 in words is "seventy-seven billion, six hundred twenty-seven million, nine hundred eleven thousand, eight hundred sixty".