99618570000 has 300 divisors, whose sum is σ = 349043692140. Its totient is φ = 26514432000.

The previous prime is 99618569993. The next prime is 99618570013. The reversal of 99618570000 is 7581699.

It can be written as a sum of positive squares in 10 ways, for example, as 91416731904 + 8201838096 = 302352^2 + 90564^2 .

It is a tau number, because it is divible by the number of its divisors (300).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 90809452 + ... + 90810548.

Almost surely, 2^99618570000 is an apocalyptic number.

99618570000 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 99618570000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174521846070).

99618570000 is an abundant number, since it is smaller than the sum of its proper divisors (249425122140).

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

99618570000 is a wasteful number, since it uses less digits than its factorization.

99618570000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140 (or 2116 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 99618570000 in words is "ninety-nine billion, six hundred eighteen million, five hundred seventy thousand".