198472502540 has 24 divisors (see below), whose sum is σ = 448853198640. Its totient is φ = 73282154688.

The previous prime is 198472502537. The next prime is 198472502549. The reversal of 198472502540 is 45205274891.

It is not an unprimeable number, because it can be changed into a prime (198472502549) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 381677630 + ... + 381678149.

It is an arithmetic number, because the mean of its divisors is an integer number (18702216610).

Almost surely, 2^198472502540 is an apocalyptic number.

198472502540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198472502540 is an abundant number, since it is smaller than the sum of its proper divisors (250380696100).

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

198472502540 is a wasteful number, since it uses less digits than its factorization.

198472502540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763355801 (or 763355799 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 198472502540 in words is "one hundred ninety-eight billion, four hundred seventy-two million, five hundred two thousand, five hundred forty".