5599403681 has 2 divisors, whose sum is σ = 5599403682. Its totient is φ = 5599403680.

The previous prime is 5599403671. The next prime is 5599403687. The reversal of 5599403681 is 1863049955.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5568144400 + 31259281 = 74620^2 + 5591^2 .

It is a cyclic number.

It is not a de Polignac number, because 5599403681 - 2²² = 5595209377 is a prime.

It is a super-2 number, since 2×5599403681² = 62706643165592699522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5599403687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2799701840 + 2799701841.

It is an arithmetic number, because the mean of its divisors is an integer number (2799701841).

Almost surely, 2^5599403681 is an apocalyptic number.

It is an amenable number.

5599403681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5599403681 is an equidigital number, since it uses as much as digits as its factorization.

5599403681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 5599403681 is about 74829.1633054921. The cubic root of 5599403681 is about 1775.7449686255.

The spelling of 5599403681 in words is "five billion, five hundred ninety-nine million, four hundred three thousand, six hundred eighty-one".