21823063392 has 48 divisors (see below), whose sum is σ = 61692125040. Its totient is φ = 6714788352.

The previous prime is 21823063363. The next prime is 21823063393. The reversal of 21823063392 is 29336032812.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×21823063392² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 21823063392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21823063393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8741967 + ... + 8744462.

It is an arithmetic number, because the mean of its divisors is an integer number (1285252605).

Almost surely, 2^21823063392 is an apocalyptic number.

It is an amenable number.

21823063392 is an abundant number, since it is smaller than the sum of its proper divisors (39869061648).

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

21823063392 is a wasteful number, since it uses less digits than its factorization.

21823063392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17486455 (or 17486447 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 21823063392 in words is "twenty-one billion, eight hundred twenty-three million, sixty-three thousand, three hundred ninety-two".