20332515404431 has 16 divisors (see below), whose sum is σ = 20999870539648. Its totient is φ = 19671387321600.

The previous prime is 20332515404417. The next prime is 20332515404441. The reversal of 20332515404431 is 13440451523302.

It is not a de Polignac number, because 20332515404431 - 2¹⁷ = 20332515273359 is a prime.

It is a super-2 number, since 2×20332515404431² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332515404441) 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 15 ways as a sum of consecutive naturals, for example, 58499146 + ... + 58845688.

It is an arithmetic number, because the mean of its divisors is an integer number (1312491908728).

Almost surely, 2^{20332515404431} is an apocalyptic number.

20332515404431 is a deficient number, since it is larger than the sum of its proper divisors (667355135217).

20332515404431 is a wasteful number, since it uses less digits than its factorization.

20332515404431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355522.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 20332515404431 its reverse (13440451523302), we get a palindrome (33772966927733).

The spelling of 20332515404431 in words is "twenty trillion, three hundred thirty-two billion, five hundred fifteen million, four hundred four thousand, four hundred thirty-one".