23949399075840 has 528 divisors, whose sum is σ = 94873608730368. Its totient is φ = 5472145539072.

The previous prime is 23949399075821. The next prime is 23949399075883. The reversal of 23949399075840 is 4857099394932.

23949399075840 is a `hidden beast` number, since 2 + 3 + 9 + 4 + 9 + 39 + 9 + 0 + 7 + 584 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 994440439 + ... + 994464521.

Almost surely, 2^{23949399075840} is an apocalyptic number.

23949399075840 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 23949399075840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47436804365184).

23949399075840 is an abundant number, since it is smaller than the sum of its proper divisors (70924209654528).

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

23949399075840 is a wasteful number, since it uses less digits than its factorization.

23949399075840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27204 (or 27183 counting only the distinct ones).

The product of its (nonzero) digits is 529079040, while the sum is 72.

The spelling of 23949399075840 in words is "twenty-three trillion, nine hundred forty-nine billion, three hundred ninety-nine million, seventy-five thousand, eight hundred forty".