23021833638 has 24 divisors (see below), whose sum is σ = 46701364824. Its totient is φ = 7565850880.

The previous prime is 23021833591. The next prime is 23021833643. The reversal of 23021833638 is 83633812032.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23021833596 and 23021833605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350331 + ... + 410822.

It is an arithmetic number, because the mean of its divisors is an integer number (1945890201).

Almost surely, 2^23021833638 is an apocalyptic number.

23021833638 is an abundant number, since it is smaller than the sum of its proper divisors (23679531186).

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

23021833638 is an equidigital number, since it uses as much as digits as its factorization.

23021833638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761300 (or 761229 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 23021833638 in words is "twenty-three billion, twenty-one million, eight hundred thirty-three thousand, six hundred thirty-eight".