191383105404240 has 320 divisors, whose sum is σ = 666350940096000. Its totient is φ = 50485494951936.

The previous prime is 191383105404223. The next prime is 191383105404251. The reversal of 191383105404240 is 42404501383191.

191383105404240 is a `hidden beast` number, since 1 + 9 + 1 + 3 + 83 + 1 + 0 + 540 + 4 + 24 + 0 = 666.

191383105404240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 73075492 + ... + 75649148.

It is an arithmetic number, because the mean of its divisors is an integer number (2082346687800).

Almost surely, 2^{191383105404240} is an apocalyptic number.

191383105404240 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 191383105404240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333175470048000).

191383105404240 is an abundant number, since it is smaller than the sum of its proper divisors (474967834691760).

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

191383105404240 is a wasteful number, since it uses less digits than its factorization.

191383105404240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574051 (or 2574039 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 191383105404240 in words is "one hundred ninety-one trillion, three hundred eighty-three billion, one hundred five million, four hundred four thousand, two hundred forty".