116806821987 has 8 divisors (see below), whose sum is σ = 163939399360. Its totient is φ = 73772729640.

The previous prime is 116806821983. The next prime is 116806822007. The reversal of 116806821987 is 789128608611.

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

It is not a de Polignac number, because 116806821987 - 2² = 116806821983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 2049242491 = 116806821987 / (1 + 1 + 6 + 8 + 0 + 6 + 8 + 2 + 1 + 9 + 8 + 7).

It is not an unprimeable number, because it can be changed into a prime (116806821983) 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, 1024621189 + ... + 1024621302.

It is an arithmetic number, because the mean of its divisors is an integer number (20492424920).

Almost surely, 2^116806821987 is an apocalyptic number.

116806821987 is a deficient number, since it is larger than the sum of its proper divisors (47132577373).

116806821987 is a wasteful number, since it uses less digits than its factorization.

116806821987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049242513.

The product of its (nonzero) digits is 2322432, while the sum is 57.

The spelling of 116806821987 in words is "one hundred sixteen billion, eight hundred six million, eight hundred twenty-one thousand, nine hundred eighty-seven".