77747757623632 has 40 divisors (see below), whose sum is σ = 157745063759040. Its totient is φ = 37051383747840.

The previous prime is 77747757623629. The next prime is 77747757623699. The reversal of 77747757623632 is 23632675774777.

It is a Smith number, since the sum of its digits (73) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375823782 + ... + 376030597.

It is an arithmetic number, because the mean of its divisors is an integer number (3943626593976).

Almost surely, 2^{77747757623632} is an apocalyptic number.

It is an amenable number.

77747757623632 is an abundant number, since it is smaller than the sum of its proper divisors (79997306135408).

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

77747757623632 is a wasteful number, since it uses less digits than its factorization.

77747757623632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751854691 (or 751854685 counting only the distinct ones).

The product of its digits is 3049462080, while the sum is 73.

The spelling of 77747757623632 in words is "seventy-seven trillion, seven hundred forty-seven billion, seven hundred fifty-seven million, six hundred twenty-three thousand, six hundred thirty-two".