77308983940 has 12 divisors (see below), whose sum is σ = 162348866316. Its totient is φ = 30923593568.

The previous prime is 77308983923. The next prime is 77308984001. The reversal of 77308983940 is 4938980377.

It can be written as a sum of positive squares in 2 ways, for example, as 36336746884 + 40972237056 = 190622^2 + 202416^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1932724579 + ... + 1932724618.

It is an arithmetic number, because the mean of its divisors is an integer number (13529072193).

Almost surely, 2^77308983940 is an apocalyptic number.

It is an amenable number.

77308983940 is an abundant number, since it is smaller than the sum of its proper divisors (85039882376).

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

77308983940 is a wasteful number, since it uses less digits than its factorization.

77308983940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865449206 (or 3865449204 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 77308983940 in words is "seventy-seven billion, three hundred eight million, nine hundred eighty-three thousand, nine hundred forty".