7971063923 has 2 divisors, whose sum is σ = 7971063924. Its totient is φ = 7971063922.

The previous prime is 7971063911. The next prime is 7971063937. The reversal of 7971063923 is 3293601797.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7971063923 - 2²² = 7966869619 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (7971063973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3985531961 + 3985531962.

It is an arithmetic number, because the mean of its divisors is an integer number (3985531962).

Almost surely, 2^7971063923 is an apocalyptic number.

7971063923 is a deficient number, since it is larger than the sum of its proper divisors (1).

7971063923 is an equidigital number, since it uses as much as digits as its factorization.

7971063923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652, while the sum is 47.

The square root of 7971063923 is about 89280.8149772391. The cubic root of 7971063923 is about 1997.5857471141.

The spelling of 7971063923 in words is "seven billion, nine hundred seventy-one million, sixty-three thousand, nine hundred twenty-three".