63446422997 has 2 divisors, whose sum is σ = 63446422998. Its totient is φ = 63446422996.

The previous prime is 63446422957. The next prime is 63446423063. The reversal of 63446422997 is 79922464436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62096154481 + 1350268516 = 249191^2 + 36746^2 .

It is a cyclic number.

It is not a de Polignac number, because 63446422997 - 2¹² = 63446418901 is a prime.

It is a super-2 number, since 2×63446422997² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63446422957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31723211498 + 31723211499.

It is an arithmetic number, because the mean of its divisors is an integer number (31723211499).

Almost surely, 2^63446422997 is an apocalyptic number.

It is an amenable number.

63446422997 is a deficient number, since it is larger than the sum of its proper divisors (1).

63446422997 is an equidigital number, since it uses as much as digits as its factorization.

63446422997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15676416, while the sum is 56.

The spelling of 63446422997 in words is "sixty-three billion, four hundred forty-six million, four hundred twenty-two thousand, nine hundred ninety-seven".