191085233664 has 120 divisors (see below), whose sum is σ = 551234653992. Its totient is φ = 58795376640.

The previous prime is 191085233639. The next prime is 191085233699. The reversal of 191085233664 is 466332580191.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108477 + ... + 627644.

Almost surely, 2^191085233664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191085233664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275617326996).

191085233664 is an abundant number, since it is smaller than the sum of its proper divisors (360149420328).

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

191085233664 is an equidigital number, since it uses as much as digits as its factorization.

191085233664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736168 (or 736139 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 191085233664 in words is "one hundred ninety-one billion, eighty-five million, two hundred thirty-three thousand, six hundred sixty-four".