20127122153631 has 20 divisors (see below), whose sum is σ = 30073681930512. Its totient is φ = 13414850274528.

The previous prime is 20127122153569. The next prime is 20127122153641. The reversal of 20127122153631 is 13635122172102.

20127122153631 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 7 + 1 + 2 + 2 + 15 + 3 + 631 = 666.

It is not a de Polignac number, because 20127122153631 - 2¹⁵ = 20127122120863 is a prime.

It is a super-2 number, since 2×20127122153631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20127122153641) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29579691 + ... + 30252476.

Almost surely, 2^{20127122153631} is an apocalyptic number.

20127122153631 is a deficient number, since it is larger than the sum of its proper divisors (9946559776881).

20127122153631 is an equidigital number, since it uses as much as digits as its factorization.

20127122153631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59836332 (or 59836323 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 20127122153631 in words is "twenty trillion, one hundred twenty-seven billion, one hundred twenty-two million, one hundred fifty-three thousand, six hundred thirty-one".