681632514028 has 6 divisors (see below), whose sum is σ = 1192856899556. Its totient is φ = 340816257012.

The previous prime is 681632514001. The next prime is 681632514047. The reversal of 681632514028 is 820415236186.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85204064250 + ... + 85204064257.

Almost surely, 2^681632514028 is an apocalyptic number.

It is an amenable number.

681632514028 is a deficient number, since it is larger than the sum of its proper divisors (511224385528).

681632514028 is a wasteful number, since it uses less digits than its factorization.

681632514028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170408128511 (or 170408128509 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 681632514028 in words is "six hundred eighty-one billion, six hundred thirty-two million, five hundred fourteen thousand, twenty-eight".