191611982102 has 4 divisors (see below), whose sum is σ = 287417973156. Its totient is φ = 95805991050.

The previous prime is 191611982077. The next prime is 191611982117. The reversal of 191611982102 is 201289116191.

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

It is a self number, because there is not a number n which added to its sum of digits gives 191611982102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47902995524 + ... + 47902995527.

It is an arithmetic number, because the mean of its divisors is an integer number (71854493289).

Almost surely, 2^191611982102 is an apocalyptic number.

191611982102 is a deficient number, since it is larger than the sum of its proper divisors (95805991054).

191611982102 is an equidigital number, since it uses as much as digits as its factorization.

191611982102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95805991053.

The product of its (nonzero) digits is 15552, while the sum is 41.

The spelling of 191611982102 in words is "one hundred ninety-one billion, six hundred eleven million, nine hundred eighty-two thousand, one hundred two".