681495338432 has 28 divisors (see below), whose sum is σ = 1375263375960. Its totient is φ = 334972283136.

The previous prime is 681495338423. The next prime is 681495338441. The reversal of 681495338432 is 234833594186.

It is an interprime number because it is at equal distance from previous prime (681495338423) and next prime (681495338441).

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct 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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90236603 + ... + 90244154.

Almost surely, 2^681495338432 is an apocalyptic number.

It is an amenable number.

681495338432 is an abundant number, since it is smaller than the sum of its proper divisors (693768037528).

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

681495338432 is a wasteful number, since it uses less digits than its factorization.

681495338432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180480828 (or 180480818 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 56.

The spelling of 681495338432 in words is "six hundred eighty-one billion, four hundred ninety-five million, three hundred thirty-eight thousand, four hundred thirty-two".