20275631761 has 16 divisors (see below), whose sum is σ = 26377786368. Its totient is φ = 15112270800.

The previous prime is 20275631759. The next prime is 20275631767. The reversal of 20275631761 is 16713657202.

It is not a de Polignac number, because 20275631761 - 2¹ = 20275631759 is a prime.

It is a super-2 number, since 2×20275631761² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20275631767) 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, 5722575 + ... + 5726116.

It is an arithmetic number, because the mean of its divisors is an integer number (1648611648).

Almost surely, 2^20275631761 is an apocalyptic number.

It is an amenable number.

20275631761 is a deficient number, since it is larger than the sum of its proper divisors (6102154607).

20275631761 is a wasteful number, since it uses less digits than its factorization.

20275631761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11448732.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 20275631761 in words is "twenty billion, two hundred seventy-five million, six hundred thirty-one thousand, seven hundred sixty-one".