77764030844272 has 20 divisors (see below), whose sum is σ = 151538721961320. Its totient is φ = 38657263886528.

The previous prime is 77764030844261. The next prime is 77764030844303. The reversal of 77764030844272 is 27244803046777.

It is a self number, because there is not a number n which added to its sum of digits gives 77764030844272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14046968122 + ... + 14046973657.

It is an arithmetic number, because the mean of its divisors is an integer number (7576936098066).

Almost surely, 2^{77764030844272} is an apocalyptic number.

It is an amenable number.

77764030844272 is a deficient number, since it is larger than the sum of its proper divisors (73774691117048).

77764030844272 is a wasteful number, since it uses less digits than its factorization.

77764030844272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28093941960 (or 28093941954 counting only the distinct ones).

The product of its (nonzero) digits is 88510464, while the sum is 61.

The spelling of 77764030844272 in words is "seventy-seven trillion, seven hundred sixty-four billion, thirty million, eight hundred forty-four thousand, two hundred seventy-two".