23109065280 has 672 divisors, whose sum is σ = 96086615040. Its totient is φ = 4991422464.

The previous prime is 23109065261. The next prime is 23109065293. The reversal of 23109065280 is 8256090132.

23109065280 is a `hidden beast` number, since 2 + 310 + 9 + 0 + 65 + 280 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 491682217 + ... + 491682263.

Almost surely, 2^23109065280 is an apocalyptic number.

23109065280 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 23109065280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48043307520).

23109065280 is an abundant number, since it is smaller than the sum of its proper divisors (72977549760).

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

23109065280 is an equidigital number, since it uses as much as digits as its factorization.

23109065280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 23109065280 in words is "twenty-three billion, one hundred nine million, sixty-five thousand, two hundred eighty".