77764011580820 has 24 divisors (see below), whose sum is σ = 171899394021600. Its totient is φ = 29468467546272.

The previous prime is 77764011580781. The next prime is 77764011580873. The reversal of 77764011580820 is 2808511046777.

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 7 ways as a sum of consecutive naturals, for example, 102321067490 + ... + 102321068249.

It is an arithmetic number, because the mean of its divisors is an integer number (7162474750900).

Almost surely, 2^{77764011580820} is an apocalyptic number.

It is an amenable number.

77764011580820 is an abundant number, since it is smaller than the sum of its proper divisors (94135382440780).

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

77764011580820 is a wasteful number, since it uses less digits than its factorization.

77764011580820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204642135767 (or 204642135765 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 56.

The spelling of 77764011580820 in words is "seventy-seven trillion, seven hundred sixty-four billion, eleven million, five hundred eighty thousand, eight hundred twenty".