23091158963840 has 384 divisors, whose sum is σ = 61924033699200. Its totient is φ = 8164174233600.

The previous prime is 23091158963801. The next prime is 23091158963849. The reversal of 23091158963840 is 4836985119032.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23091158963840.

It is not an unprimeable number, because it can be changed into a prime (23091158963849) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2663643026 + ... + 2663651694.

It is an arithmetic number, because the mean of its divisors is an integer number (161260504425).

Almost surely, 2^{23091158963840} is an apocalyptic number.

23091158963840 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 23091158963840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30962016849600).

23091158963840 is an abundant number, since it is smaller than the sum of its proper divisors (38832874735360).

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

23091158963840 is an equidigital number, since it uses as much as digits as its factorization.

23091158963840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8916 (or 8831 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 23091158963840 in words is "twenty-three trillion, ninety-one billion, one hundred fifty-eight million, nine hundred sixty-three thousand, eight hundred forty".