7991276897 has 8 divisors (see below), whose sum is σ = 8010531936. Its totient is φ = 7972045312.

The previous prime is 7991276873. The next prime is 7991276911. The reversal of 7991276897 is 7986721997.

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 7991276897 - 2⁶ = 7991276833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7991276827) 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, 805793 + ... + 815649.

It is an arithmetic number, because the mean of its divisors is an integer number (1001316492).

Almost surely, 2^7991276897 is an apocalyptic number.

It is an amenable number.

7991276897 is a deficient number, since it is larger than the sum of its proper divisors (19255039).

7991276897 is a wasteful number, since it uses less digits than its factorization.

7991276897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11727.

The product of its digits is 24004512, while the sum is 65.

The square root of 7991276897 is about 89393.9421717154. The cubic root of 7991276897 is about 1999.2728103797.

The spelling of 7991276897 in words is "seven billion, nine hundred ninety-one million, two hundred seventy-six thousand, eight hundred ninety-seven".