79946446513 has 4 divisors (see below), whose sum is σ = 79954498548. Its totient is φ = 79938394480.

The previous prime is 79946446483. The next prime is 79946446523. The reversal of 79946446513 is 31564464997.

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 22828792464 + 57117654049 = 151092^2 + 238993^2 .

It is a cyclic number.

It is not a de Polignac number, because 79946446513 - 2¹³ = 79946438321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79946446523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4011106 + ... + 4030987.

It is an arithmetic number, because the mean of its divisors is an integer number (19988624637).

Almost surely, 2^79946446513 is an apocalyptic number.

It is an amenable number.

79946446513 is a deficient number, since it is larger than the sum of its proper divisors (8052035).

79946446513 is an equidigital number, since it uses as much as digits as its factorization.

79946446513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052034.

The product of its digits is 19595520, while the sum is 58.

The spelling of 79946446513 in words is "seventy-nine billion, nine hundred forty-six million, four hundred forty-six thousand, five hundred thirteen".