77197288336 has 45 divisors (see below), whose sum is σ = 174006832251. Its totient is φ = 33081218016.

The previous prime is 77197288319. The next prime is 77197288361. The reversal of 77197288336 is 63388279177.

The square root of 77197288336 is 277844.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7774671 + ... + 7784593.

Almost surely, 2^77197288336 is an apocalyptic number.

77197288336 is the 277844-th square number.

It is an amenable number.

77197288336 is an abundant number, since it is smaller than the sum of its proper divisors (96809543915).

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

77197288336 is an frugal number, since it uses more digits than its factorization.

77197288336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19868 (or 9932 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 61.

The spelling of 77197288336 in words is "seventy-seven billion, one hundred ninety-seven million, two hundred eighty-eight thousand, three hundred thirty-six".