20013124157441 has 16 divisors (see below), whose sum is σ = 20608713719808. Its totient is φ = 19427786884800.

The previous prime is 20013124157417. The next prime is 20013124157513. The reversal of 20013124157441 is 14475142131002.

It is a cyclic number.

It is not a de Polignac number, because 20013124157441 - 2³⁸ = 19738246250497 is a prime.

It is a super-2 number, since 2×20013124157441² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013124157401) 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, 5282990 + ... + 8242343.

It is an arithmetic number, because the mean of its divisors is an integer number (1288044607488).

Almost surely, 2^{20013124157441} is an apocalyptic number.

It is an amenable number.

20013124157441 is a deficient number, since it is larger than the sum of its proper divisors (595589562367).

20013124157441 is a wasteful number, since it uses less digits than its factorization.

20013124157441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13525712.

The product of its (nonzero) digits is 26880, while the sum is 35.

Adding to 20013124157441 its reverse (14475142131002), we get a palindrome (34488266288443).

The spelling of 20013124157441 in words is "twenty trillion, thirteen billion, one hundred twenty-four million, one hundred fifty-seven thousand, four hundred forty-one".