23511399648 has 288 divisors, whose sum is σ = 70243100928. Its totient is φ = 6876334080.

The previous prime is 23511399647. The next prime is 23511399661. The reversal of 23511399648 is 84699311532.

It is a self number, because there is not a number n which added to its sum of digits gives 23511399648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23511399643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51447036 + ... + 51447492.

It is an arithmetic number, because the mean of its divisors is an integer number (243899656).

Almost surely, 2^23511399648 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 23511399648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35121550464).

23511399648 is an abundant number, since it is smaller than the sum of its proper divisors (46731701280).

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

23511399648 is a wasteful number, since it uses less digits than its factorization.

23511399648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 619 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The spelling of 23511399648 in words is "twenty-three billion, five hundred eleven million, three hundred ninety-nine thousand, six hundred forty-eight".