79823821201 has 16 divisors (see below), whose sum is σ = 82247127040. Its totient is φ = 77414901120.

The previous prime is 79823821199. The next prime is 79823821223. The reversal of 79823821201 is 10212832897.

It is a cyclic number.

It is not a de Polignac number, because 79823821201 - 2¹ = 79823821199 is a prime.

It is a super-2 number, since 2×79823821201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79823821241) 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, 21624766 + ... + 21628456.

It is an arithmetic number, because the mean of its divisors is an integer number (5140445440).

Almost surely, 2^79823821201 is an apocalyptic number.

It is an amenable number.

79823821201 is a deficient number, since it is larger than the sum of its proper divisors (2423305839).

79823821201 is a wasteful number, since it uses less digits than its factorization.

79823821201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5464.

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 79823821201 in words is "seventy-nine billion, eight hundred twenty-three million, eight hundred twenty-one thousand, two hundred one".