6366622501 has 2 divisors, whose sum is σ = 6366622502. Its totient is φ = 6366622500.

The previous prime is 6366622499. The next prime is 6366622547. The reversal of 6366622501 is 1052266636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6136372225 + 230250276 = 78335^2 + 15174^2 .

It is a cyclic number.

It is not a de Polignac number, because 6366622501 - 2¹ = 6366622499 is a prime.

Together with 6366622499, 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 (6366622001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3183311250 + 3183311251.

It is an arithmetic number, because the mean of its divisors is an integer number (3183311251).

Almost surely, 2^6366622501 is an apocalyptic number.

It is an amenable number.

6366622501 is a deficient number, since it is larger than the sum of its proper divisors (1).

6366622501 is an equidigital number, since it uses as much as digits as its factorization.

6366622501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 6366622501 is about 79791.1179330131. The cubic root of 6366622501 is about 1853.4023098527.

The spelling of 6366622501 in words is "six billion, three hundred sixty-six million, six hundred twenty-two thousand, five hundred one".