191712299466 has 16 divisors (see below), whose sum is σ = 384105644064. Its totient is φ = 63790592304.

The previous prime is 191712299419. The next prime is 191712299473. The reversal of 191712299466 is 664992217191.

It is a happy number.

It is a Curzon 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, 28373221 + ... + 28379976.

It is an arithmetic number, because the mean of its divisors is an integer number (24006602754).

Almost surely, 2^191712299466 is an apocalyptic number.

191712299466 is an abundant number, since it is smaller than the sum of its proper divisors (192393344598).

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

191712299466 is a wasteful number, since it uses less digits than its factorization.

191712299466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56753765.

The product of its digits is 2939328, while the sum is 57.

The spelling of 191712299466 in words is "one hundred ninety-one billion, seven hundred twelve million, two hundred ninety-nine thousand, four hundred sixty-six".