77253568492 has 12 divisors (see below), whose sum is σ = 141071733936. Its totient is φ = 36947358800.

The previous prime is 77253568481. The next prime is 77253568519. The reversal of 77253568492 is 29486535277.

It is a happy number.

It is a super-2 number, since 2×77253568492² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419856259 + ... + 419856442.

It is an arithmetic number, because the mean of its divisors is an integer number (11755977828).

Almost surely, 2^77253568492 is an apocalyptic number.

It is an amenable number.

77253568492 is a deficient number, since it is larger than the sum of its proper divisors (63818165444).

77253568492 is a wasteful number, since it uses less digits than its factorization.

77253568492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839712728 (or 839712726 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 58.

The spelling of 77253568492 in words is "seventy-seven billion, two hundred fifty-three million, five hundred sixty-eight thousand, four hundred ninety-two".