23105521400 has 192 divisors, whose sum is σ = 60408633600. Its totient is φ = 8160768000.

The previous prime is 23105521367. The next prime is 23105521441. The reversal of 23105521400 is 412550132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7171790 + ... + 7175010.

It is an arithmetic number, because the mean of its divisors is an integer number (314628300).

Almost surely, 2^23105521400 is an apocalyptic number.

23105521400 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 23105521400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30204316800).

23105521400 is an abundant number, since it is smaller than the sum of its proper divisors (37303112200).

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

23105521400 is a wasteful number, since it uses less digits than its factorization.

23105521400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370 (or 3361 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 23105521400 in words is "twenty-three billion, one hundred five million, five hundred twenty-one thousand, four hundred".