77993802974 has 16 divisors (see below), whose sum is σ = 119208176736. Its totient is φ = 38260965600.

The previous prime is 77993802973. The next prime is 77993802979. The reversal of 77993802974 is 47920839977.

It is a self number, because there is not a number n which added to its sum of digits gives 77993802974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77993802973) 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, 756722 + ... + 853589.

It is an arithmetic number, because the mean of its divisors is an integer number (7450511046).

Almost surely, 2^77993802974 is an apocalyptic number.

77993802974 is a deficient number, since it is larger than the sum of its proper divisors (41214373762).

77993802974 is a wasteful number, since it uses less digits than its factorization.

77993802974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610771.

The product of its (nonzero) digits is 48009024, while the sum is 65.

The spelling of 77993802974 in words is "seventy-seven billion, nine hundred ninety-three million, eight hundred two thousand, nine hundred seventy-four".