77763705478008 has 128 divisors (see below), whose sum is σ = 216600886840320. Its totient is φ = 23062779445760.

The previous prime is 77763705477959. The next prime is 77763705478031. The reversal of 77763705478008 is 80087450736777.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 759976066 + ... + 760078382.

It is an arithmetic number, because the mean of its divisors is an integer number (1692194428440).

Almost surely, 2^{77763705478008} is an apocalyptic number.

It is an amenable number.

77763705478008 is an abundant number, since it is smaller than the sum of its proper divisors (138837181362312).

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

77763705478008 is a wasteful number, since it uses less digits than its factorization.

77763705478008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163637 (or 163633 counting only the distinct ones).

The product of its (nonzero) digits is 387233280, while the sum is 69.

The spelling of 77763705478008 in words is "seventy-seven trillion, seven hundred sixty-three billion, seven hundred five million, four hundred seventy-eight thousand, eight".