191240876288 has 144 divisors (see below), whose sum is σ = 476292749184. Its totient is φ = 74452500480.

The previous prime is 191240876273. The next prime is 191240876291. The reversal of 191240876288 is 882678042191.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33448406 + ... + 33454122.

It is an arithmetic number, because the mean of its divisors is an integer number (3307588536).

Almost surely, 2^191240876288 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 191240876288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238146374592).

191240876288 is an abundant number, since it is smaller than the sum of its proper divisors (285051872896).

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

191240876288 is a wasteful number, since it uses less digits than its factorization.

191240876288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448 (or 7434 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 56.

The spelling of 191240876288 in words is "one hundred ninety-one billion, two hundred forty million, eight hundred seventy-six thousand, two hundred eighty-eight".