20500230152464 has 20 divisors (see below), whose sum is σ = 41088823366860. Its totient is φ = 9896662832000.

The previous prime is 20500230152429. The next prime is 20500230152483. The reversal of 20500230152464 is 46425103200502.

It can be written as a sum of positive squares in 2 ways, for example, as 14231816610064 + 6268413542400 = 3772508^2 + 2503680^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22090764787 + ... + 22090765714.

It is an arithmetic number, because the mean of its divisors is an integer number (2054441168343).

Almost surely, 2^{20500230152464} is an apocalyptic number.

It is an amenable number.

20500230152464 is an abundant number, since it is smaller than the sum of its proper divisors (20588593214396).

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

20500230152464 is a wasteful number, since it uses less digits than its factorization.

20500230152464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44181530538 (or 44181530532 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 20500230152464 its reverse (46425103200502), we get a palindrome (66925333352966).

The spelling of 20500230152464 in words is "twenty trillion, five hundred billion, two hundred thirty million, one hundred fifty-two thousand, four hundred sixty-four".