7981792581408 has 96 divisors (see below), whose sum is σ = 20991292705152. Its totient is φ = 2655636480000.

The previous prime is 7981792581397. The next prime is 7981792581409. The reversal of 7981792581408 is 8041852971897.

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

It is not an unprimeable number, because it can be changed into a prime (7981792581409) 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, 242348110 + ... + 242381042.

It is an arithmetic number, because the mean of its divisors is an integer number (218659299012).

Almost surely, 2^{7981792581408} is an apocalyptic number.

It is an amenable number.

7981792581408 is an abundant number, since it is smaller than the sum of its proper divisors (13009500123744).

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

7981792581408 is a wasteful number, since it uses less digits than its factorization.

7981792581408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37578 (or 37570 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 69.

The spelling of 7981792581408 in words is "seven trillion, nine hundred eighty-one billion, seven hundred ninety-two million, five hundred eighty-one thousand, four hundred eight".