76661912774660 has 12 divisors (see below), whose sum is σ = 160990016826828. Its totient is φ = 30664765109856.

The previous prime is 76661912774617. The next prime is 76661912774663. The reversal of 76661912774660 is 6647721916667.

It can be written as a sum of positive squares in 2 ways, for example, as 35875092534724 + 40786820239936 = 5989582^2 + 6386456^2 .

It is a hoax number, since the sum of its digits (68) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (76661912774663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1916547819347 + ... + 1916547819386.

It is an arithmetic number, because the mean of its divisors is an integer number (13415834735569).

Almost surely, 2^{76661912774660} is an apocalyptic number.

It is an amenable number.

76661912774660 is an abundant number, since it is smaller than the sum of its proper divisors (84328104052168).

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

76661912774660 is a wasteful number, since it uses less digits than its factorization.

76661912774660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3833095638742 (or 3833095638740 counting only the distinct ones).

The product of its (nonzero) digits is 192036096, while the sum is 68.

The spelling of 76661912774660 in words is "seventy-six trillion, six hundred sixty-one billion, nine hundred twelve million, seven hundred seventy-four thousand, six hundred sixty".