23418180899 has 16 divisors (see below), whose sum is σ = 23759736000. Its totient is φ = 23079665664.

The previous prime is 23418180893. The next prime is 23418180923. The reversal of 23418180899 is 99808181432.

It is a Cunningham number, because it is equal to 153030²-1.

It is a cyclic number.

It is not a de Polignac number, because 23418180899 - 2⁴ = 23418180883 is a prime.

It is a super-2 number, since 2×23418180899² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23418180899.

It is not an unprimeable number, because it can be changed into a prime (23418180893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20964689 + ... + 20965805.

It is an arithmetic number, because the mean of its divisors is an integer number (1484983500).

Almost surely, 2^23418180899 is an apocalyptic number.

23418180899 is a deficient number, since it is larger than the sum of its proper divisors (341555101).

23418180899 is a wasteful number, since it uses less digits than its factorization.

23418180899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222.

The product of its (nonzero) digits is 995328, while the sum is 53.

The spelling of 23418180899 in words is "twenty-three billion, four hundred eighteen million, one hundred eighty thousand, eight hundred ninety-nine".