23191889952 has 144 divisors (see below), whose sum is σ = 76476004416. Its totient is φ = 6023846400.

The previous prime is 23191889909. The next prime is 23191889971. The reversal of 23191889952 is 25998819132.

It is a junction number, because it is equal to n+sod(n) for n = 23191889892 and 23191889901.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61299 + ... + 223922.

It is an arithmetic number, because the mean of its divisors is an integer number (531083364).

Almost surely, 2^23191889952 is an apocalyptic number.

23191889952 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23191889952 is an abundant number, since it is smaller than the sum of its proper divisors (53284114464).

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

23191889952 is a wasteful number, since it uses less digits than its factorization.

23191889952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285263 (or 285244 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 57.

The spelling of 23191889952 in words is "twenty-three billion, one hundred ninety-one million, eight hundred eighty-nine thousand, nine hundred fifty-two".