117981893927 has 2 divisors, whose sum is σ = 117981893928. Its totient is φ = 117981893926.

The previous prime is 117981893923. The next prime is 117981893951. The reversal of 117981893927 is 729398189711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117981893927 - 2² = 117981893923 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117981893923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58990946963 + 58990946964.

It is an arithmetic number, because the mean of its divisors is an integer number (58990946964).

Almost surely, 2^117981893927 is an apocalyptic number.

117981893927 is a deficient number, since it is larger than the sum of its proper divisors (1).

117981893927 is an equidigital number, since it uses as much as digits as its factorization.

117981893927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 65.

The spelling of 117981893927 in words is "one hundred seventeen billion, nine hundred eighty-one million, eight hundred ninety-three thousand, nine hundred twenty-seven".