198840426465024 has 216 divisors, whose sum is σ = 577575156704000. Its totient is φ = 65786818775040.

The previous prime is 198840426464971. The next prime is 198840426465071. The reversal of 198840426465024 is 420564624048891.

It is a happy number.

198840426465024 is a `hidden beast` number, since 1 + 9 + 8 + 8 + 40 + 42 + 6 + 46 + 502 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1312653609 + ... + 1312805079.

Almost surely, 2^{198840426465024} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198840426465024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288787578352000).

198840426465024 is an abundant number, since it is smaller than the sum of its proper divisors (378734730238976).

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

198840426465024 is a wasteful number, since it uses less digits than its factorization.

198840426465024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155731 (or 155714 counting only the distinct ones).

The product of its (nonzero) digits is 106168320, while the sum is 63.

The spelling of 198840426465024 in words is "one hundred ninety-eight trillion, eight hundred forty billion, four hundred twenty-six million, four hundred sixty-five thousand, twenty-four".