77364665400 has 144 divisors (see below), whose sum is σ = 263615549400. Its totient is φ = 18755052800.

The previous prime is 77364665381. The next prime is 77364665429. The reversal of 77364665400 is 456646377.

It is a self number, because there is not a number n which added to its sum of digits gives 77364665400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 460215 + ... + 605414.

Almost surely, 2^77364665400 is an apocalyptic number.

It is an amenable number.

77364665400 is an abundant number, since it is smaller than the sum of its proper divisors (186250884000).

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

77364665400 is a wasteful number, since it uses less digits than its factorization.

77364665400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065670 (or 1065650 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 48.

The spelling of 77364665400 in words is "seventy-seven billion, three hundred sixty-four million, six hundred sixty-five thousand, four hundred".