20315432123224 has 48 divisors (see below), whose sum is σ = 45739814287680. Its totient is φ = 8425755253440.

The previous prime is 20315432123197. The next prime is 20315432123227. The reversal of 20315432123224 is 42232123451302.

It is a self number, because there is not a number n which added to its sum of digits gives 20315432123224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315432123227) 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 11 ways as a sum of consecutive naturals, for example, 835876267 + ... + 835900570.

It is an arithmetic number, because the mean of its divisors is an integer number (952912797660).

Almost surely, 2^{20315432123224} is an apocalyptic number.

It is an amenable number.

20315432123224 is an abundant number, since it is smaller than the sum of its proper divisors (25424382164456).

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

20315432123224 is a wasteful number, since it uses less digits than its factorization.

20315432123224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671776888 (or 1671776877 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 20315432123224 its reverse (42232123451302), we get a palindrome (62547555574526).

The spelling of 20315432123224 in words is "twenty trillion, three hundred fifteen billion, four hundred thirty-two million, one hundred twenty-three thousand, two hundred twenty-four".