3661772563 has 2 divisors, whose sum is σ = 3661772564. Its totient is φ = 3661772562.

The previous prime is 3661772497. The next prime is 3661772573. The reversal of 3661772563 is 3652771663.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3661772563 is a prime.

It is not a weakly prime, because it can be changed into another prime (3661772573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1830886281 + 1830886282.

It is an arithmetic number, because the mean of its divisors is an integer number (1830886282).

Almost surely, 2^3661772563 is an apocalyptic number.

3661772563 is a deficient number, since it is larger than the sum of its proper divisors (1).

3661772563 is an equidigital number, since it uses as much as digits as its factorization.

3661772563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 46.

The square root of 3661772563 is about 60512.5818569990. The cubic root of 3661772563 is about 1541.3352902624.

The spelling of 3661772563 in words is "three billion, six hundred sixty-one million, seven hundred seventy-two thousand, five hundred sixty-three".