681490439506272 has 96 divisors (see below), whose sum is σ = 1969779503470464. Its totient is φ = 204582233292800.

The previous prime is 681490439506213. The next prime is 681490439506313. The reversal of 681490439506272 is 272605934094186.

681490439506272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3015544929 + ... + 3015770912.

It is an arithmetic number, because the mean of its divisors is an integer number (20518536494484).

It is a 2-persistent number, because it is pandigital, and so is 2⋅681490439506272 = 1362980879012544, but 3⋅681490439506272 = 2044471318518816 is not.

Almost surely, 2^{681490439506272} is an apocalyptic number.

It is an amenable number.

681490439506272 is an abundant number, since it is smaller than the sum of its proper divisors (1288289063964192).

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

681490439506272 is a wasteful number, since it uses less digits than its factorization.

681490439506272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6031315972 (or 6031315964 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 66.

The spelling of 681490439506272 in words is "six hundred eighty-one trillion, four hundred ninety billion, four hundred thirty-nine million, five hundred six thousand, two hundred seventy-two".