77812144454364 has 24 divisors (see below), whose sum is σ = 182361501547008. Its totient is φ = 25823119891440.

The previous prime is 77812144454339. The next prime is 77812144454371. The reversal of 77812144454364 is 46345444121877.

77812144454364 is digitally balanced in base 4, 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 = 77812144454298 and 77812144454307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14282696332 + ... + 14282701779.

It is an arithmetic number, because the mean of its divisors is an integer number (7598395897792).

Almost surely, 2^{77812144454364} is an apocalyptic number.

It is an amenable number.

77812144454364 is an abundant number, since it is smaller than the sum of its proper divisors (104549357092644).

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

77812144454364 is a wasteful number, since it uses less digits than its factorization.

77812144454364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28565398345 (or 28565398343 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 60.

The spelling of 77812144454364 in words is "seventy-seven trillion, eight hundred twelve billion, one hundred forty-four million, four hundred fifty-four thousand, three hundred sixty-four".