77253584742 has 48 divisors (see below), whose sum is σ = 171942273360. Its totient is φ = 25054396416.

The previous prime is 77253584741. The next prime is 77253584747. The reversal of 77253584742 is 24748535277.

It is a happy number.

77253584742 is a `hidden beast` number, since 7 + 7 + 2 + 53 + 584 + 7 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77253584741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4734 + ... + 393102.

It is an arithmetic number, because the mean of its divisors is an integer number (3582130695).

Almost surely, 2^77253584742 is an apocalyptic number.

77253584742 is an abundant number, since it is smaller than the sum of its proper divisors (94688688618).

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

77253584742 is a wasteful number, since it uses less digits than its factorization.

77253584742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388677 (or 388674 counting only the distinct ones).

The product of its digits is 13171200, while the sum is 54.

The spelling of 77253584742 in words is "seventy-seven billion, two hundred fifty-three million, five hundred eighty-four thousand, seven hundred forty-two".