23507398890 has 192 divisors, whose sum is σ = 67429739520. Its totient is φ = 5655951360.

The previous prime is 23507398879. The next prime is 23507398891. The reversal of 23507398890 is 9889370532.

It is a happy number.

23507398890 is a `hidden beast` number, since 23 + 507 + 39 + 8 + 89 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (23507398891) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5167597 + ... + 5172143.

It is an arithmetic number, because the mean of its divisors is an integer number (351196560).

Almost surely, 2^23507398890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23507398890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33714869760).

23507398890 is an abundant number, since it is smaller than the sum of its proper divisors (43922340630).

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

23507398890 is a wasteful number, since it uses less digits than its factorization.

23507398890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717 (or 4714 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 23507398890 in words is "twenty-three billion, five hundred seven million, three hundred ninety-eight thousand, eight hundred ninety".