220052168731 has 4 divisors (see below), whose sum is σ = 229619654352. Its totient is φ = 210484683112.

The previous prime is 220052168711. The next prime is 220052168773. The reversal of 220052168731 is 137861250022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137861250022 = 2 ⋅68930625011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220052168731 is a prime.

It is a super-2 number, since 2×220052168731² (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 (220052168711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4783742776 + ... + 4783742821.

It is an arithmetic number, because the mean of its divisors is an integer number (57404913588).

Almost surely, 2^220052168731 is an apocalyptic number.

220052168731 is a deficient number, since it is larger than the sum of its proper divisors (9567485621).

220052168731 is an equidigital number, since it uses as much as digits as its factorization.

220052168731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9567485620.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 220052168731 in words is "two hundred twenty billion, fifty-two million, one hundred sixty-eight thousand, seven hundred thirty-one".