23520402023490 has 128 divisors (see below), whose sum is σ = 63668995614720. Its totient is φ = 6177349531584.

The previous prime is 23520402023479. The next prime is 23520402023537. The reversal of 23520402023490 is 9432020402532.

23520402023490 is a `hidden beast` number, since 2 + 3 + 520 + 4 + 0 + 20 + 23 + 4 + 90 = 666.

It is a super-2 number, since 2×23520402023490² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

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 63 ways as a sum of consecutive naturals, for example, 99865809 + ... + 100101051.

It is an arithmetic number, because the mean of its divisors is an integer number (497414028240).

Almost surely, 2^{23520402023490} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23520402023490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31834497807360).

23520402023490 is an abundant number, since it is smaller than the sum of its proper divisors (40148593591230).

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

23520402023490 is a wasteful number, since it uses less digits than its factorization.

23520402023490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240853 (or 240847 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 23520402023490 in words is "twenty-three trillion, five hundred twenty billion, four hundred two million, twenty-three thousand, four hundred ninety".