23154688020 has 96 divisors (see below), whose sum is σ = 66996034560. Its totient is φ = 5969018880.

The previous prime is 23154688009. The next prime is 23154688069. The reversal of 23154688020 is 2088645132.

It is a super-2 number, since 2×23154688020² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23154688020.

It is a congruent number.

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, 1878036 + ... + 1890324.

It is an arithmetic number, because the mean of its divisors is an integer number (697875360).

Almost surely, 2^23154688020 is an apocalyptic number.

23154688020 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 23154688020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33498017280).

23154688020 is an abundant number, since it is smaller than the sum of its proper divisors (43841346540).

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

23154688020 is a wasteful number, since it uses less digits than its factorization.

23154688020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13345 (or 13343 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 23154688020 in words is "twenty-three billion, one hundred fifty-four million, six hundred eighty-eight thousand, twenty".