23143402656 has 576 divisors, whose sum is σ = 79504588800. Its totient is φ = 6307891200.

The previous prime is 23143402613. The next prime is 23143402661. The reversal of 23143402656 is 65620434132.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23143402656.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 147410130 + ... + 147410286.

It is an arithmetic number, because the mean of its divisors is an integer number (138028800).

Almost surely, 2^23143402656 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 23143402656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39752294400).

23143402656 is an abundant number, since it is smaller than the sum of its proper divisors (56361186144).

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

23143402656 is a wasteful number, since it uses less digits than its factorization.

23143402656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 23143402656 its reverse (65620434132), we get a palindrome (88763836788).

The spelling of 23143402656 in words is "twenty-three billion, one hundred forty-three million, four hundred two thousand, six hundred fifty-six".