5156511665 has 8 divisors (see below), whose sum is σ = 6188208000. Its totient is φ = 4124946672.

The previous prime is 5156511643. The next prime is 5156511673. The reversal of 5156511665 is 5661156515.

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 5156511665 - 2²² = 5152317361 is a prime.

It is a super-2 number, since 2×5156511665² = 53179225102562144450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110162 + ... + 149828.

It is an arithmetic number, because the mean of its divisors is an integer number (773526000).

Almost surely, 2^5156511665 is an apocalyptic number.

It is an amenable number.

5156511665 is a deficient number, since it is larger than the sum of its proper divisors (1031696335).

5156511665 is a wasteful number, since it uses less digits than its factorization.

5156511665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65671.

The product of its digits is 135000, while the sum is 41.

The square root of 5156511665 is about 71808.8550598044. The cubic root of 5156511665 is about 1727.6350306997.

The spelling of 5156511665 in words is "five billion, one hundred fifty-six million, five hundred eleven thousand, six hundred sixty-five".