116511566 has 4 divisors (see below), whose sum is σ = 174767352. Its totient is φ = 58255782.

The previous prime is 116511559. The next prime is 116511587. The reversal of 116511566 is 665115611.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29127890 + ... + 29127893.

It is an arithmetic number, because the mean of its divisors is an integer number (43691838).

Almost surely, 2^116511566 is an apocalyptic number.

116511566 is a deficient number, since it is larger than the sum of its proper divisors (58255786).

116511566 is an equidigital number, since it uses as much as digits as its factorization.

116511566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58255785.

The product of its digits is 5400, while the sum is 32.

The square root of 116511566 is about 10794.0523437678. The cubic root of 116511566 is about 488.4157720423.

The spelling of 116511566 in words is "one hundred sixteen million, five hundred eleven thousand, five hundred sixty-six".