2551864836 has 48 divisors (see below), whose sum is σ = 6023001600. Its totient is φ = 840851712.

The previous prime is 2551864823. The next prime is 2551864837. The reversal of 2551864836 is 6384681552.

It is a happy number.

It is a super-3 number, since 3×2551864836³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2551864837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624496 + ... + 628568.

It is an arithmetic number, because the mean of its divisors is an integer number (125479200).

Almost surely, 2^2551864836 is an apocalyptic number.

It is an amenable number.

2551864836 is an abundant number, since it is smaller than the sum of its proper divisors (3471136764).

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

2551864836 is a wasteful number, since it uses less digits than its factorization.

2551864836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668 (or 4666 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The square root of 2551864836 is about 50515.9859450452. The cubic root of 2551864836 is about 1366.5301639857.

The spelling of 2551864836 in words is "two billion, five hundred fifty-one million, eight hundred sixty-four thousand, eight hundred thirty-six".