7307081721912 has 64 divisors (see below), whose sum is σ = 20918393049600. Its totient is φ = 2083635964800.

The previous prime is 7307081721887. The next prime is 7307081721913. The reversal of 7307081721912 is 2191271807037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7307081721913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42639964 + ... + 42810987.

It is an arithmetic number, because the mean of its divisors is an integer number (326849891400).

Almost surely, 2^{7307081721912} is an apocalyptic number.

It is an amenable number.

7307081721912 is an abundant number, since it is smaller than the sum of its proper divisors (13611311327688).

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

7307081721912 is a wasteful number, since it uses less digits than its factorization.

7307081721912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85451476 (or 85451472 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 48.

The spelling of 7307081721912 in words is "seven trillion, three hundred seven billion, eighty-one million, seven hundred twenty-one thousand, nine hundred twelve".