2153663561431 has 4 divisors (see below), whose sum is σ = 2227927822200. Its totient is φ = 2079399300664.

The previous prime is 2153663561389. The next prime is 2153663561477. The reversal of 2153663561431 is 1341653663512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2153663561431 - 2⁷ = 2153663561303 is a prime.

It is a super-2 number, since 2×2153663561431² (a number of 25 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 (2153663541431) 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, 37132130341 + ... + 37132130398.

It is an arithmetic number, because the mean of its divisors is an integer number (556981955550).

Almost surely, 2^{2153663561431} is an apocalyptic number.

2153663561431 is a deficient number, since it is larger than the sum of its proper divisors (74264260769).

2153663561431 is an equidigital number, since it uses as much as digits as its factorization.

2153663561431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74264260768.

The product of its digits is 1166400, while the sum is 46.

The spelling of 2153663561431 in words is "two trillion, one hundred fifty-three billion, six hundred sixty-three million, five hundred sixty-one thousand, four hundred thirty-one".