7997923311 has 16 divisors (see below), whose sum is σ = 12607564800. Its totient is φ = 4412647008.

The previous prime is 7997923301. The next prime is 7997923313. The reversal of 7997923311 is 1133297997.

It is a happy number.

It is not a de Polignac number, because 7997923311 - 2⁶ = 7997923247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7997923313) 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, 6565831 + ... + 6567048.

It is an arithmetic number, because the mean of its divisors is an integer number (787972800).

Almost surely, 2^7997923311 is an apocalyptic number.

7997923311 is a deficient number, since it is larger than the sum of its proper divisors (4609641489).

7997923311 is a wasteful number, since it uses less digits than its factorization.

7997923311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13132918.

The product of its digits is 642978, while the sum is 51.

The square root of 7997923311 is about 89431.1093020768. The cubic root of 7997923311 is about 1999.8269276067.

The spelling of 7997923311 in words is "seven billion, nine hundred ninety-seven million, nine hundred twenty-three thousand, three hundred eleven".