671272680198 has 32 divisors (see below), whose sum is σ = 1349482996224. Its totient is φ = 222601494752.

The previous prime is 671272680181. The next prime is 671272680203. The reversal of 671272680198 is 891086272176.

It is a super-2 number, since 2×671272680198² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 18760561 + ... + 18796307.

It is an arithmetic number, because the mean of its divisors is an integer number (42171343632).

Almost surely, 2^671272680198 is an apocalyptic number.

671272680198 is an abundant number, since it is smaller than the sum of its proper divisors (678210316026).

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

671272680198 is a wasteful number, since it uses less digits than its factorization.

671272680198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51836.

The product of its (nonzero) digits is 4064256, while the sum is 57.

The spelling of 671272680198 in words is "six hundred seventy-one billion, two hundred seventy-two million, six hundred eighty thousand, one hundred ninety-eight".