198431767102 has 4 divisors (see below), whose sum is σ = 297647650656. Its totient is φ = 99215883550.

The previous prime is 198431767087. The next prime is 198431767109. The reversal of 198431767102 is 201767134891.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198431767109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49607941774 + ... + 49607941777.

It is an arithmetic number, because the mean of its divisors is an integer number (74411912664).

Almost surely, 2^198431767102 is an apocalyptic number.

198431767102 is a deficient number, since it is larger than the sum of its proper divisors (99215883554).

198431767102 is an equidigital number, since it uses as much as digits as its factorization.

198431767102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99215883553.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 198431767102 in words is "one hundred ninety-eight billion, four hundred thirty-one million, seven hundred sixty-seven thousand, one hundred two".