191051527040 has 512 divisors, whose sum is σ = 541881446400. Its totient is φ = 64172359680.

The previous prime is 191051527003. The next prime is 191051527061. The reversal of 191051527040 is 40725150191.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1144021037 + ... + 1144021203.

It is an arithmetic number, because the mean of its divisors is an integer number (1058362200).

Almost surely, 2^191051527040 is an apocalyptic number.

191051527040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191051527040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270940723200).

191051527040 is an abundant number, since it is smaller than the sum of its proper divisors (350829919360).

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

191051527040 is a wasteful number, since it uses less digits than its factorization.

191051527040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 191051527040 in words is "one hundred ninety-one billion, fifty-one million, five hundred twenty-seven thousand, forty".