160644131631 has 16 divisors (see below), whose sum is σ = 238151845120. Its totient is φ = 107023845240.

The previous prime is 160644131621. The next prime is 160644131671. The reversal of 160644131631 is 136131446061.

160644131631 is a `hidden beast` number, since 1 + 6 + 0 + 6 + 4 + 4 + 13 + 1 + 631 = 666.

It is not a de Polignac number, because 160644131631 - 2¹⁸ = 160643869487 is a prime.

It is a super-2 number, since 2×160644131631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160644131621) 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, 1965955 + ... + 2046036.

It is an arithmetic number, because the mean of its divisors is an integer number (14884490320).

Almost surely, 2^160644131631 is an apocalyptic number.

160644131631 is a deficient number, since it is larger than the sum of its proper divisors (77507713489).

160644131631 is a wasteful number, since it uses less digits than its factorization.

160644131631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013483 (or 4013477 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Adding to 160644131631 its reverse (136131446061), we get a palindrome (296775577692).

The spelling of 160644131631 in words is "one hundred sixty billion, six hundred forty-four million, one hundred thirty-one thousand, six hundred thirty-one".