875781141991 has 8 divisors (see below), whose sum is σ = 1001172107264. Its totient is φ = 750460020120.

The previous prime is 875781141973. The next prime is 875781142013. The reversal of 875781141991 is 199141187578.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 875781141991 - 2⁹ = 875781141479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (875781141901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17433975 + ... + 17484136.

It is an arithmetic number, because the mean of its divisors is an integer number (125146513408).

Almost surely, 2^875781141991 is an apocalyptic number.

875781141991 is a deficient number, since it is larger than the sum of its proper divisors (125390965273).

875781141991 is a wasteful number, since it uses less digits than its factorization.

875781141991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34921701.

The product of its digits is 5080320, while the sum is 61.

The spelling of 875781141991 in words is "eight hundred seventy-five billion, seven hundred eighty-one million, one hundred forty-one thousand, nine hundred ninety-one".