23155444144 has 20 divisors (see below), whose sum is σ = 51272769424. Its totient is φ = 9923761728.

The previous prime is 23155444087. The next prime is 23155444157. The reversal of 23155444144 is 44144455132.

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 3 ways as a sum of consecutive naturals, for example, 103372407 + ... + 103372630.

Almost surely, 2^23155444144 is an apocalyptic number.

It is an amenable number.

23155444144 is an abundant number, since it is smaller than the sum of its proper divisors (28117325280).

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

23155444144 is a wasteful number, since it uses less digits than its factorization.

23155444144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206745052 (or 206745046 counting only the distinct ones).

The product of its digits is 153600, while the sum is 37.

Adding to 23155444144 its reverse (44144455132), we get a palindrome (67299899276).

The spelling of 23155444144 in words is "twenty-three billion, one hundred fifty-five million, four hundred forty-four thousand, one hundred forty-four".