63244391906 has 8 divisors (see below), whose sum is σ = 94935686364. Its totient is φ = 31599163120.

The previous prime is 63244391869. The next prime is 63244391921. The reversal of 63244391906 is 60919344236.

It can be written as a sum of positive squares in 2 ways, for example, as 62395543681 + 848848225 = 249791^2 + 29135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 11512985 + ... + 11518476.

Almost surely, 2^63244391906 is an apocalyptic number.

63244391906 is a deficient number, since it is larger than the sum of its proper divisors (31691294458).

63244391906 is a wasteful number, since it uses less digits than its factorization.

63244391906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23032836.

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 63244391906 in words is "sixty-three billion, two hundred forty-four million, three hundred ninety-one thousand, nine hundred six".