79820708073 has 32 divisors (see below), whose sum is σ = 113223153024. Its totient is φ = 49846321152.

The previous prime is 79820708069. The next prime is 79820708129. The reversal of 79820708073 is 37080702897.

It is not a de Polignac number, because 79820708073 - 2² = 79820708069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (79820708053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10207261 + ... + 10215077.

It is an arithmetic number, because the mean of its divisors is an integer number (3538223532).

Almost surely, 2^79820708073 is an apocalyptic number.

It is an amenable number.

79820708073 is a deficient number, since it is larger than the sum of its proper divisors (33402444951).

79820708073 is a wasteful number, since it uses less digits than its factorization.

79820708073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8761.

The product of its (nonzero) digits is 1185408, while the sum is 51.

The spelling of 79820708073 in words is "seventy-nine billion, eight hundred twenty million, seven hundred eight thousand, seventy-three".