5211426440 has 192 divisors, whose sum is σ = 13496414400. Its totient is φ = 1807393280.

The previous prime is 5211426413. The next prime is 5211426497. The reversal of 5211426440 is 446241125.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15018347 + ... + 15018693.

It is an arithmetic number, because the mean of its divisors is an integer number (70293825).

Almost surely, 2^5211426440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5211426440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6748207200).

5211426440 is an abundant number, since it is smaller than the sum of its proper divisors (8284987960).

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

5211426440 is a wasteful number, since it uses less digits than its factorization.

5211426440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 5211426440 is about 72190.2101396027. The cubic root of 5211426440 is about 1733.7462604317.

Adding to 5211426440 its reverse (446241125), we get a palindrome (5657667565).

The spelling of 5211426440 in words is "five billion, two hundred eleven million, four hundred twenty-six thousand, four hundred forty".