20231214564 has 96 divisors (see below), whose sum is σ = 52381873152. Its totient is φ = 6025936000.

The previous prime is 20231214533. The next prime is 20231214593. The reversal of 20231214564 is 46541213202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3248974 + ... + 3255194.

It is an arithmetic number, because the mean of its divisors is an integer number (545644512).

Almost surely, 2^20231214564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20231214564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26190936576).

20231214564 is an abundant number, since it is smaller than the sum of its proper divisors (32150658588).

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

20231214564 is a wasteful number, since it uses less digits than its factorization.

20231214564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6657 (or 6655 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 20231214564 its reverse (46541213202), we get a palindrome (66772427766).

The spelling of 20231214564 in words is "twenty billion, two hundred thirty-one million, two hundred fourteen thousand, five hundred sixty-four".