5213616840 has 80 divisors (see below), whose sum is σ = 17523556380. Its totient is φ = 1390296960.

The previous prime is 5213616803. The next prime is 5213616871. The reversal of 5213616840 is 486163125.

It is a happy number.

5213616840 is a `hidden beast` number, since 521 + 36 + 1 + 68 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5134868964 + 78747876 = 71658^2 + 8874^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5213616795 and 5213616804.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 801331 + ... + 807810.

Almost surely, 2^5213616840 is an apocalyptic number.

It is an amenable number.

5213616840 is an abundant number, since it is smaller than the sum of its proper divisors (12309939540).

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

5213616840 is a wasteful number, since it uses less digits than its factorization.

5213616840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609164 (or 1609151 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 5213616840 is about 72205.3795779788. The cubic root of 5213616840 is about 1733.9891284145.

Adding to 5213616840 its reverse (486163125), we get a palindrome (5699779965).

The spelling of 5213616840 in words is "five billion, two hundred thirteen million, six hundred sixteen thousand, eight hundred forty".