447128028637 has 2 divisors, whose sum is σ = 447128028638. Its totient is φ = 447128028636.

The previous prime is 447128028547. The next prime is 447128028709. The reversal of 447128028637 is 736820821744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429646164676 + 17481863961 = 655474^2 + 132219^2 .

It is a cyclic number.

It is not a de Polignac number, because 447128028637 - 2¹⁹ = 447127504349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447128028437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223564014318 + 223564014319.

It is an arithmetic number, because the mean of its divisors is an integer number (223564014319).

Almost surely, 2^447128028637 is an apocalyptic number.

It is an amenable number.

447128028637 is a deficient number, since it is larger than the sum of its proper divisors (1).

447128028637 is an equidigital number, since it uses as much as digits as its factorization.

447128028637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3612672, while the sum is 52.

The spelling of 447128028637 in words is "four hundred forty-seven billion, one hundred twenty-eight million, twenty-eight thousand, six hundred thirty-seven".