198537253672 has 8 divisors (see below), whose sum is σ = 372257350650. Its totient is φ = 99268626832.

The previous prime is 198537253639. The next prime is 198537253723. The reversal of 198537253672 is 276352735891.

It is a happy number.

198537253672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 145302766596 + 53234487076 = 381186^2 + 230726^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12408578347 + ... + 12408578362.

Almost surely, 2^198537253672 is an apocalyptic number.

It is an amenable number.

198537253672 is a deficient number, since it is larger than the sum of its proper divisors (173720096978).

198537253672 is a wasteful number, since it uses less digits than its factorization.

198537253672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24817156715 (or 24817156711 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 58.

The spelling of 198537253672 in words is "one hundred ninety-eight billion, five hundred thirty-seven million, two hundred fifty-three thousand, six hundred seventy-two".