5156515566 has 40 divisors (see below), whose sum is σ = 11577568464. Its totient is φ = 1715394240.

The previous prime is 5156515561. The next prime is 5156515577. The reversal of 5156515566 is 6655156515.

5156515566 is a `hidden beast` number, since 5 + 15 + 65 + 15 + 566 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156515561) 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 in 19 ways as a sum of consecutive naturals, for example, 49846 + ... + 113126.

Almost surely, 2^5156515566 is an apocalyptic number.

5156515566 is an abundant number, since it is smaller than the sum of its proper divisors (6421052898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5156515566 is a wasteful number, since it uses less digits than its factorization.

5156515566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63798 (or 63789 counting only the distinct ones).

The product of its digits is 675000, while the sum is 45.

The square root of 5156515566 is about 71808.8822221875. The cubic root of 5156515566 is about 1727.6354663626.

The spelling of 5156515566 in words is "five billion, one hundred fifty-six million, five hundred fifteen thousand, five hundred sixty-six".