99123570000 has 1800 divisors, whose sum is σ = 460783752000. Its totient is φ = 19813248000.

The previous prime is 99123569999. The next prime is 99123570017. The reversal of 99123570000 is 7532199.

It is a tau number, because it is divible by the number of its divisors (1800).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 5217029991 + ... + 5217030009.

Almost surely, 2^99123570000 is an apocalyptic number.

99123570000 is a gapful number since it is divisible by the number (90) 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 99123570000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230391876000).

99123570000 is an abundant number, since it is smaller than the sum of its proper divisors (361660182000).

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

99123570000 is a wasteful number, since it uses less digits than its factorization.

99123570000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The spelling of 99123570000 in words is "ninety-nine billion, one hundred twenty-three million, five hundred seventy thousand".