7915951697 has 4 divisors (see below), whose sum is σ = 7916757300. Its totient is φ = 7915146096.

The previous prime is 7915951691. The next prime is 7915951709. The reversal of 7915951697 is 7961595197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7961595197 = 97 ⋅82078301.

It can be written as a sum of positive squares in 2 ways, for example, as 3379794496 + 4536157201 = 58136^2 + 67351^2 .

It is a cyclic number.

It is not a de Polignac number, because 7915951697 - 2⁶ = 7915951633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7915951691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387878 + ... + 407775.

It is an arithmetic number, because the mean of its divisors is an integer number (1979189325).

Almost surely, 2^7915951697 is an apocalyptic number.

It is an amenable number.

7915951697 is a deficient number, since it is larger than the sum of its proper divisors (805603).

7915951697 is an equidigital number, since it uses as much as digits as its factorization.

7915951697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805602.

The product of its digits is 5358150, while the sum is 59.

The square root of 7915951697 is about 88971.6342268703. The cubic root of 7915951697 is about 1992.9713023913.

The spelling of 7915951697 in words is "seven billion, nine hundred fifteen million, nine hundred fifty-one thousand, six hundred ninety-seven".