20233710864 has 120 divisors (see below), whose sum is σ = 57110016600. Its totient is φ = 6687221760.

The previous prime is 20233710859. The next prime is 20233710877. The reversal of 20233710864 is 46801733202.

It is a happy number.

20233710864 is a `hidden beast` number, since 202 + 3 + 371 + 0 + 86 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3685461264 + 16548249600 = 60708^2 + 128640^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8869404 + ... + 8871684.

It is an arithmetic number, because the mean of its divisors is an integer number (475916805).

Almost surely, 2^20233710864 is an apocalyptic number.

20233710864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20233710864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28555008300).

20233710864 is an abundant number, since it is smaller than the sum of its proper divisors (36876305736).

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

20233710864 is a wasteful number, since it uses less digits than its factorization.

20233710864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793 (or 2784 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 20233710864 in words is "twenty billion, two hundred thirty-three million, seven hundred ten thousand, eight hundred sixty-four".