79101939571 has 2 divisors, whose sum is σ = 79101939572. Its totient is φ = 79101939570.

The previous prime is 79101939547. The next prime is 79101939629. The reversal of 79101939571 is 17593910197.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79101939571 - 2⁷ = 79101939443 is a prime.

It is not a weakly prime, because it can be changed into another prime (79101939971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39550969785 + 39550969786.

It is an arithmetic number, because the mean of its divisors is an integer number (39550969786).

Almost surely, 2^79101939571 is an apocalyptic number.

79101939571 is a deficient number, since it is larger than the sum of its proper divisors (1).

79101939571 is an equidigital number, since it uses as much as digits as its factorization.

79101939571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 535815, while the sum is 52.

The spelling of 79101939571 in words is "seventy-nine billion, one hundred one million, nine hundred thirty-nine thousand, five hundred seventy-one".