23143545464 has 48 divisors (see below), whose sum is σ = 47068009920. Its totient is φ = 10663660800.

The previous prime is 23143545443. The next prime is 23143545511. The reversal of 23143545464 is 46454534132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 806564 + ... + 834764.

It is an arithmetic number, because the mean of its divisors is an integer number (980583540).

Almost surely, 2^23143545464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23143545464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23534004960).

23143545464 is an abundant number, since it is smaller than the sum of its proper divisors (23924464456).

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

23143545464 is a wasteful number, since it uses less digits than its factorization.

23143545464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28840 (or 28823 counting only the distinct ones).

The product of its digits is 691200, while the sum is 41.

The spelling of 23143545464 in words is "twenty-three billion, one hundred forty-three million, five hundred forty-five thousand, four hundred sixty-four".