198697720896 has 224 divisors, whose sum is σ = 622669824000. Its totient is φ = 61951578624.

The previous prime is 198697720883. The next prime is 198697720909. The reversal of 198697720896 is 698027796891.

It is an interprime number because it is at equal distance from previous prime (198697720883) and next prime (198697720909).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2555425 + ... + 2632031.

It is an arithmetic number, because the mean of its divisors is an integer number (2779776000).

Almost surely, 2^198697720896 is an apocalyptic number.

198697720896 is a gapful number since it is divisible by the number (16) 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 198697720896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311334912000).

198697720896 is an abundant number, since it is smaller than the sum of its proper divisors (423972103104).

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

198697720896 is a wasteful number, since it uses less digits than its factorization.

198697720896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76726 (or 76710 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 72.

The spelling of 198697720896 in words is "one hundred ninety-eight billion, six hundred ninety-seven million, seven hundred twenty thousand, eight hundred ninety-six".