20231475564064 has 96 divisors (see below), whose sum is σ = 41359109803200. Its totient is φ = 9730255610880.

The previous prime is 20231475564059. The next prime is 20231475564071. The reversal of 20231475564064 is 46046557413202.

It is a junction number, because it is equal to n+sod(n) for n = 20231475563999 and 20231475564017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318971074 + ... + 319034494.

It is an arithmetic number, because the mean of its divisors is an integer number (430824060450).

Almost surely, 2^{20231475564064} 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 20231475564064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20679554901600).

20231475564064 is an abundant number, since it is smaller than the sum of its proper divisors (21127634239136).

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

20231475564064 is a wasteful number, since it uses less digits than its factorization.

20231475564064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64746 (or 64738 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 49.

The spelling of 20231475564064 in words is "twenty trillion, two hundred thirty-one billion, four hundred seventy-five million, five hundred sixty-four thousand, sixty-four".