79809451073 has 16 divisors (see below), whose sum is σ = 90106248960. Its totient is φ = 70021728000.

The previous prime is 79809451063. The next prime is 79809451103. The reversal of 79809451073 is 37015490897.

It is a cyclic number.

It is not a de Polignac number, because 79809451073 - 2⁶ = 79809451009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79809451063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696761 + ... + 803177.

It is an arithmetic number, because the mean of its divisors is an integer number (5631640560).

Almost surely, 2^79809451073 is an apocalyptic number.

It is an amenable number.

79809451073 is a deficient number, since it is larger than the sum of its proper divisors (10296797887).

79809451073 is a wasteful number, since it uses less digits than its factorization.

79809451073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108808.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 79809451073 in words is "seventy-nine billion, eight hundred nine million, four hundred fifty-one thousand, seventy-three".