7981697015 has 16 divisors (see below), whose sum is σ = 10005944256. Its totient is φ = 6100723200.

The previous prime is 7981696973. The next prime is 7981697029. The reversal of 7981697015 is 5107961897.

It is not a de Polignac number, because 7981697015 - 2¹⁴ = 7981680631 is a prime.

It is a Duffinian number.

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, 61925 + ... + 140705.

It is an arithmetic number, because the mean of its divisors is an integer number (625371516).

Almost surely, 2^7981697015 is an apocalyptic number.

7981697015 is a deficient number, since it is larger than the sum of its proper divisors (2024247241).

7981697015 is a wasteful number, since it uses less digits than its factorization.

7981697015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79690.

The product of its (nonzero) digits is 952560, while the sum is 53.

The square root of 7981697015 is about 89340.3437143601. The cubic root of 7981697015 is about 1998.4735865774.

The spelling of 7981697015 in words is "seven billion, nine hundred eighty-one million, six hundred ninety-seven thousand, fifteen".