198794687472 has 60 divisors (see below), whose sum is σ = 585630556680. Its totient is φ = 62777268864.

The previous prime is 198794687437. The next prime is 198794687477. The reversal of 198794687472 is 274786497891.

198794687472 is a `hidden beast` number, since 1 + 9 + 8 + 7 + 94 + 68 + 7 + 472 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 198794687472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198794687477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36326703 + ... + 36332174.

It is an arithmetic number, because the mean of its divisors is an integer number (9760509278).

Almost surely, 2^198794687472 is an apocalyptic number.

198794687472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198794687472 is an abundant number, since it is smaller than the sum of its proper divisors (386835869208).

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

198794687472 is a wasteful number, since it uses less digits than its factorization.

198794687472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72658910 (or 72658901 counting only the distinct ones).

The product of its digits is 341397504, while the sum is 72.

The spelling of 198794687472 in words is "one hundred ninety-eight billion, seven hundred ninety-four million, six hundred eighty-seven thousand, four hundred seventy-two".