220131401651 has 16 divisors (see below), whose sum is σ = 252729528000. Its totient is φ = 187822333440.

The previous prime is 220131401639. The next prime is 220131401671. The reversal of 220131401651 is 156104131022.

It is not a de Polignac number, because 220131401651 - 2²² = 220127207347 is a prime.

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 220131401651.

It is not an unprimeable number, because it can be changed into a prime (220131401671) 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, 1904975 + ... + 2017223.

It is an arithmetic number, because the mean of its divisors is an integer number (15795595500).

Almost surely, 2^220131401651 is an apocalyptic number.

220131401651 is a deficient number, since it is larger than the sum of its proper divisors (32598126349).

220131401651 is a wasteful number, since it uses less digits than its factorization.

220131401651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113534.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 220131401651 its reverse (156104131022), we get a palindrome (376235532673).

The spelling of 220131401651 in words is "two hundred twenty billion, one hundred thirty-one million, four hundred one thousand, six hundred fifty-one".