20520044234631 has 24 divisors (see below), whose sum is σ = 30149926085760. Its totient is φ = 13444823682576.

The previous prime is 20520044234623. The next prime is 20520044234659. The reversal of 20520044234631 is 13643244002502.

20520044234631 is a `hidden beast` number, since 2 + 0 + 5 + 200 + 442 + 3 + 4 + 6 + 3 + 1 = 666.

It is not a de Polignac number, because 20520044234631 - 2³ = 20520044234623 is a prime.

It is a super-2 number, since 2×20520044234631² (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 (20520044234671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2659795 + ... + 6936468.

It is an arithmetic number, because the mean of its divisors is an integer number (1256246920240).

Almost surely, 2^{20520044234631} is an apocalyptic number.

20520044234631 is a deficient number, since it is larger than the sum of its proper divisors (9629881851129).

20520044234631 is a wasteful number, since it uses less digits than its factorization.

20520044234631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9600355 (or 9600352 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The spelling of 20520044234631 in words is "twenty trillion, five hundred twenty billion, forty-four million, two hundred thirty-four thousand, six hundred thirty-one".