99198322650 has 1152 divisors, whose sum is σ = 369696337920. Its totient is φ = 19214807040.

The previous prime is 99198322649. The next prime is 99198322651. The reversal of 99198322650 is 5622389199.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99198322649) and next prime (99198322651).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (99198322651) by changing a digit.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 631836372 + ... + 631836528.

It is an arithmetic number, because the mean of its divisors is an integer number (320916960).

Almost surely, 2^99198322650 is an apocalyptic number.

99198322650 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 99198322650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184848168960).

99198322650 is an abundant number, since it is smaller than the sum of its proper divisors (270498015270).

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

99198322650 is a wasteful number, since it uses less digits than its factorization.

99198322650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 99198322650 in words is "ninety-nine billion, one hundred ninety-eight million, three hundred twenty-two thousand, six hundred fifty".