23402145198840 has 256 divisors, whose sum is σ = 74521152921600. Its totient is φ = 5869551206400.

The previous prime is 23402145198829. The next prime is 23402145198853. The reversal of 23402145198840 is 4889154120432.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39821056 + ... + 40404464.

It is an arithmetic number, because the mean of its divisors is an integer number (291098253600).

Almost surely, 2^{23402145198840} is an apocalyptic number.

23402145198840 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 23402145198840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37260576460800).

23402145198840 is an abundant number, since it is smaller than the sum of its proper divisors (51119007722760).

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

23402145198840 is a wasteful number, since it uses less digits than its factorization.

23402145198840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583758 (or 583754 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 23402145198840 in words is "twenty-three trillion, four hundred two billion, one hundred forty-five million, one hundred ninety-eight thousand, eight hundred forty".