20423122020450 has 72 divisors (see below), whose sum is σ = 58097775369348. Its totient is φ = 5125803171840.

The previous prime is 20423122020421. The next prime is 20423122020493. The reversal of 20423122020450 is 5402022132402.

20423122020450 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 3 + 1 + 2 + 202 + 0 + 450 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 17424922416489 + 2998199603961 = 4174317^2 + 1731531^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1334836927 + ... + 1334852226.

Almost surely, 2^{20423122020450} is an apocalyptic number.

20423122020450 is an abundant number, since it is smaller than the sum of its proper divisors (37674653348898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20423122020450 is a wasteful number, since it uses less digits than its factorization.

20423122020450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669689188 (or 2669689180 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 20423122020450 its reverse (5402022132402), we get a palindrome (25825144152852).

The spelling of 20423122020450 in words is "twenty trillion, four hundred twenty-three billion, one hundred twenty-two million, twenty thousand, four hundred fifty".