5165866887 has 4 divisors (see below), whose sum is σ = 6887822520. Its totient is φ = 3443911256.

The previous prime is 5165866847. The next prime is 5165866913. The reversal of 5165866887 is 7886685615.

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

It is a cyclic number.

It is not a de Polignac number, because 5165866887 - 2²⁰ = 5164818311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5165866887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5165866807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860977812 + ... + 860977817.

It is an arithmetic number, because the mean of its divisors is an integer number (1721955630).

Almost surely, 2^5165866887 is an apocalyptic number.

5165866887 is a deficient number, since it is larger than the sum of its proper divisors (1721955633).

5165866887 is a wasteful number, since it uses less digits than its factorization.

5165866887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721955632.

The product of its digits is 19353600, while the sum is 60.

The square root of 5165866887 is about 71873.9652934218. The cubic root of 5165866887 is about 1728.6791890958.

The spelling of 5165866887 in words is "five billion, one hundred sixty-five million, eight hundred sixty-six thousand, eight hundred eighty-seven".