77800521134044 has 6 divisors (see below), whose sum is σ = 136150911984584. Its totient is φ = 38900260567020.

The previous prime is 77800521134033. The next prime is 77800521134071. The reversal of 77800521134044 is 44043112500877.

77800521134044 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 77800521133985 and 77800521134003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9725065141752 + ... + 9725065141759.

Almost surely, 2^{77800521134044} is an apocalyptic number.

It is an amenable number.

77800521134044 is a deficient number, since it is larger than the sum of its proper divisors (58350390850540).

77800521134044 is a wasteful number, since it uses less digits than its factorization.

77800521134044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19450130283515 (or 19450130283513 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 77800521134044 in words is "seventy-seven trillion, eight hundred billion, five hundred twenty-one million, one hundred thirty-four thousand, forty-four".