198996750000 has 700 divisors, whose sum is σ = 745501707456. Its totient is φ = 51192000000.

The previous prime is 198996749993. The next prime is 198996750023. The reversal of 198996750000 is 57699891.

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

It is an unprimeable number.

It is a polite number, since it can be written in 139 ways as a sum of consecutive naturals, for example, 627749842 + ... + 627750158.

Almost surely, 2^198996750000 is an apocalyptic number.

198996750000 is a gapful number since it is divisible by the number (10) 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 198996750000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372750853728).

198996750000 is an abundant number, since it is smaller than the sum of its proper divisors (546504957456).

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

198996750000 is an frugal number, since it uses more digits than its factorization.

198996750000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The spelling of 198996750000 in words is "one hundred ninety-eight billion, nine hundred ninety-six million, seven hundred fifty thousand".