79216564623739 has 2 divisors, whose sum is σ = 79216564623740. Its totient is φ = 79216564623738.

The previous prime is 79216564623659. The next prime is 79216564623751. The reversal of 79216564623739 is 93732646561297.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79216564623739 - 2³⁹ = 78666808809851 is a prime.

It is a super-2 number, since 2×79216564623739² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79216568623739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39608282311869 + 39608282311870.

It is an arithmetic number, because the mean of its divisors is an integer number (39608282311870).

Almost surely, 2^{79216564623739} is an apocalyptic number.

79216564623739 is a deficient number, since it is larger than the sum of its proper divisors (1).

79216564623739 is an equidigital number, since it uses as much as digits as its factorization.

79216564623739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 617258880, while the sum is 70.

The spelling of 79216564623739 in words is "seventy-nine trillion, two hundred sixteen billion, five hundred sixty-four million, six hundred twenty-three thousand, seven hundred thirty-nine".