20957431141353 has 32 divisors (see below), whose sum is σ = 33207517612800. Its totient is φ = 11502810095616.

The previous prime is 20957431141343. The next prime is 20957431141373. The reversal of 20957431141353 is 35314113475902.

It is not a de Polignac number, because 20957431141353 - 2¹⁰ = 20957431140329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20957431141343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89034948 + ... + 89270021.

It is an arithmetic number, because the mean of its divisors is an integer number (1037734925400).

Almost surely, 2^{20957431141353} is an apocalyptic number.

It is an amenable number.

20957431141353 is a deficient number, since it is larger than the sum of its proper divisors (12250086471447).

20957431141353 is a wasteful number, since it uses less digits than its factorization.

20957431141353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178305201.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 20957431141353 in words is "twenty trillion, nine hundred fifty-seven billion, four hundred thirty-one million, one hundred forty-one thousand, three hundred fifty-three".