7981792581407 has 8 divisors (see below), whose sum is σ = 8453646409536. Its totient is φ = 7510198377472.

The previous prime is 7981792581397. The next prime is 7981792581409. The reversal of 7981792581407 is 7041852971897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7981792581407 - 2⁸ = 7981792581151 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 64842743 + ... + 64965720.

It is an arithmetic number, because the mean of its divisors is an integer number (1056705801192).

Almost surely, 2^{7981792581407} is an apocalyptic number.

7981792581407 is a deficient number, since it is larger than the sum of its proper divisors (471853828129).

7981792581407 is a wasteful number, since it uses less digits than its factorization.

7981792581407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129812097.

The product of its (nonzero) digits is 71124480, while the sum is 68.

The spelling of 7981792581407 in words is "seven trillion, nine hundred eighty-one billion, seven hundred ninety-two million, five hundred eighty-one thousand, four hundred seven".