198533449056 has 48 divisors (see below), whose sum is σ = 521184510000. Its totient is φ = 66173472768.

The previous prime is 198533449027. The next prime is 198533449193. The reversal of 198533449056 is 650944335891.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×198533449056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 198533448987 and 198533449005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1619820 + ... + 1738068.

It is an arithmetic number, because the mean of its divisors is an integer number (10858010625).

Almost surely, 2^198533449056 is an apocalyptic number.

198533449056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

198533449056 is an abundant number, since it is smaller than the sum of its proper divisors (322651060944).

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

198533449056 is a wasteful number, since it uses less digits than its factorization.

198533449056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135751 (or 135743 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 57.

The spelling of 198533449056 in words is "one hundred ninety-eight billion, five hundred thirty-three million, four hundred forty-nine thousand, fifty-six".