77761512958 has 16 divisors (see below), whose sum is σ = 121878426240. Its totient is φ = 37139947416.

The previous prime is 77761512953. The next prime is 77761512973. The reversal of 77761512958 is 85921516777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77761512953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1109760 + ... + 1177747.

It is an arithmetic number, because the mean of its divisors is an integer number (7617401640).

Almost surely, 2^77761512958 is an apocalyptic number.

77761512958 is a deficient number, since it is larger than the sum of its proper divisors (44116913282).

77761512958 is a wasteful number, since it uses less digits than its factorization.

77761512958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288271.

The product of its digits is 7408800, while the sum is 58.

The spelling of 77761512958 in words is "seventy-seven billion, seven hundred sixty-one million, five hundred twelve thousand, nine hundred fifty-eight".