191390307283044 has 192 divisors, whose sum is σ = 502744847109120. Its totient is φ = 62960866375680.

The previous prime is 191390307282973. The next prime is 191390307283093. The reversal of 191390307283044 is 440382703093191.

191390307283044 is a `hidden beast` number, since 1 + 9 + 1 + 3 + 9 + 0 + 307 + 28 + 304 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 3867930784 + ... + 3867980264.

It is an arithmetic number, because the mean of its divisors is an integer number (2618462745360).

Almost surely, 2^{191390307283044} 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 191390307283044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251372423554560).

191390307283044 is an abundant number, since it is smaller than the sum of its proper divisors (311354539826076).

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

191390307283044 is a wasteful number, since it uses less digits than its factorization.

191390307283044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51155 (or 51147 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 191390307283044 in words is "one hundred ninety-one trillion, three hundred ninety billion, three hundred seven million, two hundred eighty-three thousand, forty-four".