5051665511 has 4 divisors (see below), whose sum is σ = 5051809224. Its totient is φ = 5051521800.

The previous prime is 5051665501. The next prime is 5051665561. The reversal of 5051665511 is 1155661505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5051665511 is a prime.

It is a super-3 number, since 3×5051665511³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5051665501) 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, 20081 + ... + 102501.

It is an arithmetic number, because the mean of its divisors is an integer number (1262952306).

Almost surely, 2^5051665511 is an apocalyptic number.

5051665511 is a deficient number, since it is larger than the sum of its proper divisors (143713).

5051665511 is an equidigital number, since it uses as much as digits as its factorization.

5051665511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143712.

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 5051665511 is about 71075.0695462199. The cubic root of 5051665511 is about 1715.8455611586.

The spelling of 5051665511 in words is "five billion, fifty-one million, six hundred sixty-five thousand, five hundred eleven".