79905343501 has 2 divisors, whose sum is σ = 79905343502. Its totient is φ = 79905343500.

The previous prime is 79905343439. The next prime is 79905343541. The reversal of 79905343501 is 10534350997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79665062500 + 240281001 = 282250^2 + 15501^2 .

It is an emirp because it is prime and its reverse (10534350997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79905343501 - 2²⁵ = 79871789069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79905343541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39952671750 + 39952671751.

It is an arithmetic number, because the mean of its divisors is an integer number (39952671751).

Almost surely, 2^79905343501 is an apocalyptic number.

It is an amenable number.

79905343501 is a deficient number, since it is larger than the sum of its proper divisors (1).

79905343501 is an equidigital number, since it uses as much as digits as its factorization.

79905343501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 510300, while the sum is 46.

The spelling of 79905343501 in words is "seventy-nine billion, nine hundred five million, three hundred forty-three thousand, five hundred one".