79020121232013 has 32 divisors (see below), whose sum is σ = 113764588296576. Its totient is φ = 48499311852288.

The previous prime is 79020121231879. The next prime is 79020121232027. The reversal of 79020121232013 is 31023212102097.

It is a happy number.

It is not a de Polignac number, because 79020121232013 - 2⁹ = 79020121231501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79020121232053) 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 in 31 ways as a sum of consecutive naturals, for example, 127223670 + ... + 127843272.

It is an arithmetic number, because the mean of its divisors is an integer number (3555143384268).

Almost surely, 2^{79020121232013} is an apocalyptic number.

It is an amenable number.

79020121232013 is a deficient number, since it is larger than the sum of its proper divisors (34744467064563).

79020121232013 is a wasteful number, since it uses less digits than its factorization.

79020121232013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628253.

The product of its (nonzero) digits is 9072, while the sum is 33.

The spelling of 79020121232013 in words is "seventy-nine trillion, twenty billion, one hundred twenty-one million, two hundred thirty-two thousand, thirteen".