7981792581406 has 32 divisors (see below), whose sum is σ = 13722087960000. Its totient is φ = 3411024003072.

The previous prime is 7981792581397. The next prime is 7981792581409. The reversal of 7981792581406 is 6041852971897.

It is a congruent number.

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, 9719590 + ... + 10508758.

It is an arithmetic number, because the mean of its divisors is an integer number (428815248750).

Almost surely, 2^{7981792581406} is an apocalyptic number.

7981792581406 is a deficient number, since it is larger than the sum of its proper divisors (5740295378594).

7981792581406 is a wasteful number, since it uses less digits than its factorization.

7981792581406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791236.

The product of its (nonzero) digits is 60963840, while the sum is 67.

The spelling of 7981792581406 in words is "seven trillion, nine hundred eighty-one billion, seven hundred ninety-two million, five hundred eighty-one thousand, four hundred six".