77533574516 has 12 divisors (see below), whose sum is σ = 137318500032. Its totient is φ = 38299717368.

The previous prime is 77533574423. The next prime is 77533574527. The reversal of 77533574516 is 61547533577.

It is a happy number.

It is a super-2 number, since 2×77533574516² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 116767100 + ... + 116767763.

It is an arithmetic number, because the mean of its divisors is an integer number (11443208336).

Almost surely, 2^77533574516 is an apocalyptic number.

It is an amenable number.

77533574516 is a deficient number, since it is larger than the sum of its proper divisors (59784925516).

77533574516 is a wasteful number, since it uses less digits than its factorization.

77533574516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233534950 (or 233534948 counting only the distinct ones).

The product of its digits is 9261000, while the sum is 53.

The spelling of 77533574516 in words is "seventy-seven billion, five hundred thirty-three million, five hundred seventy-four thousand, five hundred sixteen".