77734641612056 has 32 divisors (see below), whose sum is σ = 171233651106000. Its totient is φ = 32615933543040.

The previous prime is 77734641611999. The next prime is 77734641612059. The reversal of 77734641612056 is 65021614643777.

It is a junction number, because it is equal to n+sod(n) for n = 77734641611986 and 77734641612004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77734641612059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33974929631 + ... + 33974931918.

Almost surely, 2^{77734641612056} is an apocalyptic number.

It is an amenable number.

77734641612056 is an abundant number, since it is smaller than the sum of its proper divisors (93499009493944).

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

77734641612056 is a wasteful number, since it uses less digits than its factorization.

77734641612056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67949861579 (or 67949861575 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 59.

The spelling of 77734641612056 in words is "seventy-seven trillion, seven hundred thirty-four billion, six hundred forty-one million, six hundred twelve thousand, fifty-six".