79972189801 has 16 divisors (see below), whose sum is σ = 92862028800. Its totient is φ = 67457149200.

The previous prime is 79972189757. The next prime is 79972189823. The reversal of 79972189801 is 10898127997.

It is not a de Polignac number, because 79972189801 - 2⁹ = 79972189289 is a prime.

It is a super-4 number, since 4×79972189801⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79972189801.

It is not an unprimeable number, because it can be changed into a prime (79972189861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240451 + ... + 466648.

It is an arithmetic number, because the mean of its divisors is an integer number (5803876800).

Almost surely, 2^79972189801 is an apocalyptic number.

It is an amenable number.

79972189801 is a deficient number, since it is larger than the sum of its proper divisors (12889838999).

79972189801 is a wasteful number, since it uses less digits than its factorization.

79972189801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707364.

The product of its (nonzero) digits is 4572288, while the sum is 61.

The spelling of 79972189801 in words is "seventy-nine billion, nine hundred seventy-two million, one hundred eighty-nine thousand, eight hundred one".