79900658701 has 4 divisors (see below), whose sum is σ = 80409580252. Its totient is φ = 79391737152.

The previous prime is 79900658639. The next prime is 79900658743. The reversal of 79900658701 is 10785600997.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20779222500 + 59121436201 = 144150^2 + 243149^2 .

It is a cyclic number.

It is not a de Polignac number, because 79900658701 - 2⁷ = 79900658573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79900658771) 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 in 3 ways as a sum of consecutive naturals, for example, 254460540 + ... + 254460853.

It is an arithmetic number, because the mean of its divisors is an integer number (20102395063).

Almost surely, 2^79900658701 is an apocalyptic number.

It is an amenable number.

79900658701 is a deficient number, since it is larger than the sum of its proper divisors (508921551).

79900658701 is a wasteful number, since it uses less digits than its factorization.

79900658701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508921550.

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 79900658701 in words is "seventy-nine billion, nine hundred million, six hundred fifty-eight thousand, seven hundred one".