79510974457 has 2 divisors, whose sum is σ = 79510974458. Its totient is φ = 79510974456.

The previous prime is 79510974437. The next prime is 79510974469. The reversal of 79510974457 is 75447901597.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64406318656 + 15104655801 = 253784^2 + 122901^2 .

It is a cyclic number.

It is not a de Polignac number, because 79510974457 - 2²⁷ = 79376756729 is a prime.

It is not a weakly prime, because it can be changed into another prime (79510974427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39755487228 + 39755487229.

It is an arithmetic number, because the mean of its divisors is an integer number (39755487229).

Almost surely, 2^79510974457 is an apocalyptic number.

It is an amenable number.

79510974457 is a deficient number, since it is larger than the sum of its proper divisors (1).

79510974457 is an equidigital number, since it uses as much as digits as its factorization.

79510974457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11113200, while the sum is 58.

The spelling of 79510974457 in words is "seventy-nine billion, five hundred ten million, nine hundred seventy-four thousand, four hundred fifty-seven".