5640400004 has 12 divisors (see below), whose sum is σ = 9899992284. Its totient is φ = 2811830784.

The previous prime is 5640399959. The next prime is 5640400013. The reversal of 5640400004 is 4000040465.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2313417604 + 3326982400 = 48098^2 + 57680^2 .

It is a super-2 number, since 2×5640400004² = 63628224410246400032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2090789 + ... + 2093484.

It is an arithmetic number, because the mean of its divisors is an integer number (824999357).

Almost surely, 2^5640400004 is an apocalyptic number.

It is an amenable number.

5640400004 is a deficient number, since it is larger than the sum of its proper divisors (4259592280).

5640400004 is a wasteful number, since it uses less digits than its factorization.

5640400004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184614 (or 4184612 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 5640400004 is about 75102.5965196943. The cubic root of 5640400004 is about 1780.0681710204.

Adding to 5640400004 its reverse (4000040465), we get a palindrome (9640440469).

The spelling of 5640400004 in words is "five billion, six hundred forty million, four hundred thousand, four".