77053026645 has 48 divisors (see below), whose sum is σ = 160671987840. Its totient is φ = 33370330752.

The previous prime is 77053026581. The next prime is 77053026647. The reversal of 77053026645 is 54662035077.

77053026645 is a `hidden beast` number, since 7 + 70 + 530 + 2 + 6 + 6 + 45 = 666.

It is not a de Polignac number, because 77053026645 - 2⁶ = 77053026581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77053026645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77053026647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6431194 + ... + 6443163.

It is an arithmetic number, because the mean of its divisors is an integer number (3347333080).

Almost surely, 2^77053026645 is an apocalyptic number.

It is an amenable number.

77053026645 is an abundant number, since it is smaller than the sum of its proper divisors (83618961195).

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

77053026645 is a wasteful number, since it uses less digits than its factorization.

77053026645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12874394 (or 12874391 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 45.

The spelling of 77053026645 in words is "seventy-seven billion, fifty-three million, twenty-six thousand, six hundred forty-five".