79221689345 has 16 divisors (see below), whose sum is σ = 96016257792. Its totient is φ = 62744214720.

The previous prime is 79221689293. The next prime is 79221689357. The reversal of 79221689345 is 54398612297.

It is not a de Polignac number, because 79221689345 - 2¹⁴ = 79221672961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1969535 + ... + 2009355.

It is an arithmetic number, because the mean of its divisors is an integer number (6001016112).

Almost surely, 2^79221689345 is an apocalyptic number.

It is an amenable number.

79221689345 is a deficient number, since it is larger than the sum of its proper divisors (16794568447).

79221689345 is a wasteful number, since it uses less digits than its factorization.

79221689345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43792.

The product of its digits is 6531840, while the sum is 56.

The spelling of 79221689345 in words is "seventy-nine billion, two hundred twenty-one million, six hundred eighty-nine thousand, three hundred forty-five".