5581039663 has 2 divisors, whose sum is σ = 5581039664. Its totient is φ = 5581039662.

The previous prime is 5581039661. The next prime is 5581039693. The reversal of 5581039663 is 3669301855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5581039663 - 2¹ = 5581039661 is a prime.

It is a super-2 number, since 2×5581039663² = 62296007439958307138, which contains 22 as substring.

Together with 5581039661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5581039661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2790519831 + 2790519832.

It is an arithmetic number, because the mean of its divisors is an integer number (2790519832).

Almost surely, 2^5581039663 is an apocalyptic number.

5581039663 is a deficient number, since it is larger than the sum of its proper divisors (1).

5581039663 is an equidigital number, since it uses as much as digits as its factorization.

5581039663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 46.

The square root of 5581039663 is about 74706.3562422904. The cubic root of 5581039663 is about 1773.8015755438.

The spelling of 5581039663 in words is "five billion, five hundred eighty-one million, thirty-nine thousand, six hundred sixty-three".