77071086812196 has 135 divisors (see below), whose sum is σ = 208201257897633. Its totient is φ = 24860060684640.

The previous prime is 77071086812173. The next prime is 77071086812221. The reversal of 77071086812196 is 69121868017077.

The square root of 77071086812196 is 8779014.

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

It can be written as a sum of positive squares in only one way, i.e., 8019374422500 + 69051712389696 = 2831850^2 + 8309736^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 4898681946 + ... + 4898697678.

Almost surely, 2^{77071086812196} is an apocalyptic number.

77071086812196 is the 8779014-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77071086812196

77071086812196 is an abundant number, since it is smaller than the sum of its proper divisors (131130171085437).

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

77071086812196 is an frugal number, since it uses more digits than its factorization.

77071086812196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31544 (or 15769 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 63.

The spelling of 77071086812196 in words is "seventy-seven trillion, seventy-one billion, eighty-six million, eight hundred twelve thousand, one hundred ninety-six".