79221378733 has 32 divisors (see below), whose sum is σ = 95196916224. Its totient is φ = 64456584192.

The previous prime is 79221378721. The next prime is 79221378737. The reversal of 79221378733 is 33787312297.

It is not a de Polignac number, because 79221378733 - 2⁹ = 79221378221 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 (79221378737) 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, 27727441 + ... + 27730297.

It is an arithmetic number, because the mean of its divisors is an integer number (2974903632).

Almost surely, 2^79221378733 is an apocalyptic number.

It is an amenable number.

79221378733 is a deficient number, since it is larger than the sum of its proper divisors (15975537491).

79221378733 is a wasteful number, since it uses less digits than its factorization.

79221378733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141.

The product of its digits is 2667168, while the sum is 52.

The spelling of 79221378733 in words is "seventy-nine billion, two hundred twenty-one million, three hundred seventy-eight thousand, seven hundred thirty-three".