20013404452131 has 8 divisors (see below), whose sum is σ = 26700940345024. Its totient is φ = 13334069097000.

The previous prime is 20013404452127. The next prime is 20013404452133. The reversal of 20013404452131 is 13125440431002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20013404452131 - 2² = 20013404452127 is a prime.

It is a super-2 number, since 2×20013404452131² (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 (20013404452133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2050128745 + ... + 2050138506.

It is an arithmetic number, because the mean of its divisors is an integer number (3337617543128).

Almost surely, 2^{20013404452131} is an apocalyptic number.

20013404452131 is a deficient number, since it is larger than the sum of its proper divisors (6687535892893).

20013404452131 is a wasteful number, since it uses less digits than its factorization.

20013404452131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100268881.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 20013404452131 its reverse (13125440431002), we get a palindrome (33138844883133).

The spelling of 20013404452131 in words is "twenty trillion, thirteen billion, four hundred four million, four hundred fifty-two thousand, one hundred thirty-one".