447145144637 has 2 divisors, whose sum is σ = 447145144638. Its totient is φ = 447145144636.

The previous prime is 447145144619. The next prime is 447145144703. The reversal of 447145144637 is 736441541744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443057971876 + 4087172761 = 665626^2 + 63931^2 .

It is a cyclic number.

It is not a de Polignac number, because 447145144637 - 2¹⁴ = 447145128253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447145144937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223572572318 + 223572572319.

It is an arithmetic number, because the mean of its divisors is an integer number (223572572319).

Almost surely, 2^447145144637 is an apocalyptic number.

It is an amenable number.

447145144637 is a deficient number, since it is larger than the sum of its proper divisors (1).

447145144637 is an equidigital number, since it uses as much as digits as its factorization.

447145144637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 50.

The spelling of 447145144637 in words is "four hundred forty-seven billion, one hundred forty-five million, one hundred forty-four thousand, six hundred thirty-seven".