198458155504 has 80 divisors (see below), whose sum is σ = 453829810176. Its totient is φ = 82271520000.

The previous prime is 198458155471. The next prime is 198458155513. The reversal of 198458155504 is 405551854891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8171379 + ... + 8195629.

Almost surely, 2^198458155504 is an apocalyptic number.

198458155504 is a gapful number since it is divisible by the number (14) 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 198458155504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226914905088).

198458155504 is an abundant number, since it is smaller than the sum of its proper divisors (255371654672).

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

198458155504 is a wasteful number, since it uses less digits than its factorization.

198458155504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26654 (or 26648 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 55.

The spelling of 198458155504 in words is "one hundred ninety-eight billion, four hundred fifty-eight million, one hundred fifty-five thousand, five hundred four".