191652991008 has 96 divisors (see below), whose sum is σ = 505829064384. Its totient is φ = 63536996352.

The previous prime is 191652990929. The next prime is 191652991009. The reversal of 191652991008 is 800199256191.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (191652991009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23901816 + ... + 23909832.

It is an arithmetic number, because the mean of its divisors is an integer number (5269052754).

Almost surely, 2^191652991008 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 191652991008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252914532192).

191652991008 is an abundant number, since it is smaller than the sum of its proper divisors (314176073376).

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

191652991008 is a wasteful number, since it uses less digits than its factorization.

191652991008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9354 (or 9346 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 51.

The spelling of 191652991008 in words is "one hundred ninety-one billion, six hundred fifty-two million, nine hundred ninety-one thousand, eight".