23321020404555 has 80 divisors (see below), whose sum is σ = 41988640012704. Its totient is φ = 12434465986560.

The previous prime is 23321020404553. The next prime is 23321020404581. The reversal of 23321020404555 is 55540402012332.

23321020404555 is a `hidden beast` number, since 2 + 3 + 32 + 10 + 20 + 40 + 4 + 555 = 666.

It is not a de Polignac number, because 23321020404555 - 2¹ = 23321020404553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23321020404553) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 381524395 + ... + 381585515.

Almost surely, 2^{23321020404555} is an apocalyptic number.

23321020404555 is a deficient number, since it is larger than the sum of its proper divisors (18667619608149).

23321020404555 is an frugal number, since it uses more digits than its factorization.

23321020404555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65030 (or 65006 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 23321020404555 its reverse (55540402012332), we get a palindrome (78861422416887).

The spelling of 23321020404555 in words is "twenty-three trillion, three hundred twenty-one billion, twenty million, four hundred four thousand, five hundred fifty-five".