681101272234812 has 144 divisors (see below), whose sum is σ = 1893201619294496. Its totient is φ = 189304348147200.

The previous prime is 681101272234771. The next prime is 681101272234847. The reversal of 681101272234812 is 218432272101186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111950239 + ... + 117877302.

Almost surely, 2^{681101272234812} is an apocalyptic number.

It is an amenable number.

681101272234812 is an abundant number, since it is smaller than the sum of its proper divisors (1212100347059684).

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

681101272234812 is a wasteful number, since it uses less digits than its factorization.

681101272234812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229827740 (or 229827727 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 681101272234812 in words is "six hundred eighty-one trillion, one hundred one billion, two hundred seventy-two million, two hundred thirty-four thousand, eight hundred twelve".