447995377997 has 2 divisors, whose sum is σ = 447995377998. Its totient is φ = 447995377996.

The previous prime is 447995377799. The next prime is 447995378011. The reversal of 447995377997 is 799773599744.

Together with previous prime (447995377799) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399441696196 + 48553681801 = 632014^2 + 220349^2 .

It is a cyclic number.

It is not a de Polignac number, because 447995377997 - 2²² = 447991183693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447965377997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223997688998 + 223997688999.

It is an arithmetic number, because the mean of its divisors is an integer number (223997688999).

Almost surely, 2^447995377997 is an apocalyptic number.

It is an amenable number.

447995377997 is a deficient number, since it is larger than the sum of its proper divisors (1).

447995377997 is an equidigital number, since it uses as much as digits as its factorization.

447995377997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780710640, while the sum is 80.

The spelling of 447995377997 in words is "four hundred forty-seven billion, nine hundred ninety-five million, three hundred seventy-seven thousand, nine hundred ninety-seven".