23498576640 has 864 divisors, whose sum is σ = 103311936000. Its totient is φ = 4789370880.

The previous prime is 23498576617. The next prime is 23498576641. The reversal of 23498576640 is 4667589432.

23498576640 is a `hidden beast` number, since 2 + 3 + 4 + 9 + 8 + 576 + 64 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (23498576641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 52335136 + ... + 52335584.

It is an arithmetic number, because the mean of its divisors is an integer number (119574000).

Almost surely, 2^23498576640 is an apocalyptic number.

23498576640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23498576640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51655968000).

23498576640 is an abundant number, since it is smaller than the sum of its proper divisors (79813359360).

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

23498576640 is a wasteful number, since it uses less digits than its factorization.

23498576640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 23498576640 in words is "twenty-three billion, four hundred ninety-eight million, five hundred seventy-six thousand, six hundred forty".