99251606580 has 192 divisors, whose sum is σ = 323350272000. Its totient is φ = 22276588032.

The previous prime is 99251606563. The next prime is 99251606581. The reversal of 99251606580 is 8560615299.

It is a super-2 number, since 2×99251606580² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99251606581) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30452991 + ... + 30456249.

It is an arithmetic number, because the mean of its divisors is an integer number (1684116000).

Almost surely, 2^99251606580 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 99251606580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161675136000).

99251606580 is an abundant number, since it is smaller than the sum of its proper divisors (224098665420).

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

99251606580 is a wasteful number, since it uses less digits than its factorization.

99251606580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566 (or 4564 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 99251606580 in words is "ninety-nine billion, two hundred fifty-one million, six hundred six thousand, five hundred eighty".