23073361920 has 520 divisors, whose sum is σ = 94575776064. Its totient is φ = 5271257088.

The previous prime is 23073361919. The next prime is 23073361921. The reversal of 23073361920 is 2916337032.

23073361920 is a `hidden beast` number, since 2 + 3 + 0 + 7 + 33 + 619 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (23073361919) and next prime (23073361921).

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

It is not an unprimeable number, because it can be changed into a prime (23073361921) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11611167 + ... + 11613153.

Almost surely, 2^23073361920 is an apocalyptic number.

23073361920 is a gapful number since it is divisible by the number (20) 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 23073361920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47287888032).

23073361920 is an abundant number, since it is smaller than the sum of its proper divisors (71502414144).

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

23073361920 is an equidigital number, since it uses as much as digits as its factorization.

23073361920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035 (or 2004 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 36.

Adding to 23073361920 its reverse (2916337032), we get a palindrome (25989698952).

The spelling of 23073361920 in words is "twenty-three billion, seventy-three million, three hundred sixty-one thousand, nine hundred twenty".