20023300361564 has 24 divisors (see below), whose sum is σ = 35153289172848. Its totient is φ = 9979504479360.

The previous prime is 20023300361543. The next prime is 20023300361627. The reversal of 20023300361564 is 46516300332002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136240559 + ... + 136387449.

It is an arithmetic number, because the mean of its divisors is an integer number (1464720382202).

Almost surely, 2^{20023300361564} is an apocalyptic number.

It is an amenable number.

20023300361564 is a deficient number, since it is larger than the sum of its proper divisors (15129988811284).

20023300361564 is a wasteful number, since it uses less digits than its factorization.

20023300361564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256085 (or 256083 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 20023300361564 its reverse (46516300332002), we get a palindrome (66539600693566).

The spelling of 20023300361564 in words is "twenty trillion, twenty-three billion, three hundred million, three hundred sixty-one thousand, five hundred sixty-four".