681057177512 has 16 divisors (see below), whose sum is σ = 1286730165600. Its totient is φ = 337929133360.

The previous prime is 681057177503. The next prime is 681057177527. The reversal of 681057177512 is 215771750186.

It is a super-3 number, since 3×681057177512³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324930812 + ... + 324932907.

It is an arithmetic number, because the mean of its divisors is an integer number (80420635350).

Almost surely, 2^681057177512 is an apocalyptic number.

It is an amenable number.

681057177512 is a deficient number, since it is larger than the sum of its proper divisors (605672988088).

681057177512 is a wasteful number, since it uses less digits than its factorization.

681057177512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649863856 (or 649863852 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 50.

The spelling of 681057177512 in words is "six hundred eighty-one billion, fifty-seven million, one hundred seventy-seven thousand, five hundred twelve".