249198132687198 has 16 divisors (see below), whose sum is σ = 501005669907456. Its totient is φ = 82631143473560.

The previous prime is 249198132687181. The next prime is 249198132687227. The reversal of 249198132687198 is 891786231891942.

It is a happy number.

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, 108725187636 + ... + 108725189927.

It is an arithmetic number, because the mean of its divisors is an integer number (31312854369216).

Almost surely, 2^{249198132687198} is an apocalyptic number.

249198132687198 is an abundant number, since it is smaller than the sum of its proper divisors (251807537220258).

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

249198132687198 is a wasteful number, since it uses less digits than its factorization.

249198132687198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217450377759.

The product of its digits is 752467968, while the sum is 78.

The spelling of 249198132687198 in words is "two hundred forty-nine trillion, one hundred ninety-eight billion, one hundred thirty-two million, six hundred eighty-seven thousand, one hundred ninety-eight".