116821140571 has 4 divisors (see below), whose sum is σ = 118564739752. Its totient is φ = 115077541392.

The previous prime is 116821140563. The next prime is 116821140587. The reversal of 116821140571 is 175041128611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 116821140571 - 2³ = 116821140563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 116821140571.

It is not an unprimeable number, because it can be changed into a prime (116821140511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871799490 + ... + 871799623.

It is an arithmetic number, because the mean of its divisors is an integer number (29641184938).

Almost surely, 2^116821140571 is an apocalyptic number.

116821140571 is a deficient number, since it is larger than the sum of its proper divisors (1743599181).

116821140571 is an equidigital number, since it uses as much as digits as its factorization.

116821140571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743599180.

The product of its (nonzero) digits is 13440, while the sum is 37.

The spelling of 116821140571 in words is "one hundred sixteen billion, eight hundred twenty-one million, one hundred forty thousand, five hundred seventy-one".