23202521640 has 96 divisors (see below), whose sum is σ = 77840755200. Its totient is φ = 5987744640.

The previous prime is 23202521557. The next prime is 23202521681. The reversal of 23202521640 is 4612520232.

It is a happy 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 23 ways as a sum of consecutive naturals, for example, 1028380 + ... + 1050699.

It is an arithmetic number, because the mean of its divisors is an integer number (810841200).

Almost surely, 2^23202521640 is an apocalyptic number.

23202521640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23202521640 is an abundant number, since it is smaller than the sum of its proper divisors (54638233560).

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

23202521640 is a wasteful number, since it uses less digits than its factorization.

23202521640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079127 (or 2079120 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 23202521640 in words is "twenty-three billion, two hundred two million, five hundred twenty-one thousand, six hundred forty".