20345372322472 has 64 divisors (see below), whose sum is σ = 38563636608000. Its totient is φ = 10062446137344.

The previous prime is 20345372322409. The next prime is 20345372322487. The reversal of 20345372322472 is 27422327354302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288842554 + ... + 288912982.

It is an arithmetic number, because the mean of its divisors is an integer number (602556822000).

Almost surely, 2^{20345372322472} is an apocalyptic number.

It is an amenable number.

20345372322472 is a deficient number, since it is larger than the sum of its proper divisors (18218264285528).

20345372322472 is a wasteful number, since it uses less digits than its factorization.

20345372322472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71690 (or 71686 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 46.

Adding to 20345372322472 its reverse (27422327354302), we get a palindrome (47767699676774).

The spelling of 20345372322472 in words is "twenty trillion, three hundred forty-five billion, three hundred seventy-two million, three hundred twenty-two thousand, four hundred seventy-two".