77757347831064 has 32 divisors (see below), whose sum is σ = 212065494085440. Its totient is φ = 23562832676000.

The previous prime is 77757347831039. The next prime is 77757347831113. The reversal of 77757347831064 is 46013874375777.

It is a self number, because there is not a number n which added to its sum of digits gives 77757347831064.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147267703962 + ... + 147267704489.

It is an arithmetic number, because the mean of its divisors is an integer number (6627046690170).

Almost surely, 2^{77757347831064} is an apocalyptic number.

It is an amenable number.

77757347831064 is an abundant number, since it is smaller than the sum of its proper divisors (134308146254376).

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

77757347831064 is a wasteful number, since it uses less digits than its factorization.

77757347831064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294535408471 (or 294535408467 counting only the distinct ones).

The product of its (nonzero) digits is 580849920, while the sum is 69.

The spelling of 77757347831064 in words is "seventy-seven trillion, seven hundred fifty-seven billion, three hundred forty-seven million, eight hundred thirty-one thousand, sixty-four".