20531502430554 has 32 divisors (see below), whose sum is σ = 41073260396544. Its totient is φ = 6842125105920.

The previous prime is 20531502430519. The next prime is 20531502430597. The reversal of 20531502430554 is 45503420513502.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 692657574 + ... + 692687214.

It is an arithmetic number, because the mean of its divisors is an integer number (1283539387392).

Almost surely, 2^{20531502430554} is an apocalyptic number.

20531502430554 is an abundant number, since it is smaller than the sum of its proper divisors (20541757965990).

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

20531502430554 is a wasteful number, since it uses less digits than its factorization.

20531502430554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54582.

The product of its (nonzero) digits is 360000, while the sum is 39.

The spelling of 20531502430554 in words is "twenty trillion, five hundred thirty-one billion, five hundred two million, four hundred thirty thousand, five hundred fifty-four".