5165837778 has 8 divisors (see below), whose sum is σ = 10331675568. Its totient is φ = 1721945924.

The previous prime is 5165837749. The next prime is 5165837779. The reversal of 5165837778 is 8777385615.

It is a sphenic number, since it is the product of 3 distinct primes.

5165837778 is an admirable number.

It is a super-3 number, since 3×5165837778³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (5165837779) 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, 430486476 + ... + 430486487.

It is an arithmetic number, because the mean of its divisors is an integer number (1291459446).

Almost surely, 2^5165837778 is an apocalyptic number.

5165837778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

5165837778 is a wasteful number, since it uses less digits than its factorization.

5165837778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860972968.

The product of its digits is 9878400, while the sum is 57.

The square root of 5165837778 is about 71873.7627928300. The cubic root of 5165837778 is about 1728.6759421275.

It can be divided in two parts, 5165837 and 778, that added together give a palindrome (5166615).

The spelling of 5165837778 in words is "five billion, one hundred sixty-five million, eight hundred thirty-seven thousand, seven hundred seventy-eight".