77941883556 has 168 divisors, whose sum is σ = 212301661824. Its totient is φ = 25008315840.

The previous prime is 77941883527. The next prime is 77941883567. The reversal of 77941883556 is 65538814977.

77941883556 is a `hidden beast` number, since 7 + 79 + 4 + 1 + 8 + 8 + 3 + 556 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 77941883493 and 77941883502.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 8355511 + ... + 8364833.

It is an arithmetic number, because the mean of its divisors is an integer number (1263700368).

Almost surely, 2^77941883556 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 77941883556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106150830912).

77941883556 is an abundant number, since it is smaller than the sum of its proper divisors (134359778268).

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

77941883556 is a wasteful number, since it uses less digits than its factorization.

77941883556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9453 (or 9436 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 63.

The spelling of 77941883556 in words is "seventy-seven billion, nine hundred forty-one million, eight hundred eighty-three thousand, five hundred fifty-six".