63264446257 has 2 divisors, whose sum is σ = 63264446258. Its totient is φ = 63264446256.

The previous prime is 63264446233. The next prime is 63264446291. The reversal of 63264446257 is 75264446236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63242693361 + 21752896 = 251481^2 + 4664^2 .

It is a cyclic number.

It is not a de Polignac number, because 63264446257 - 2³¹ = 61116962609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63264446257.

It is not a weakly prime, because it can be changed into another prime (63264446207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31632223128 + 31632223129.

It is an arithmetic number, because the mean of its divisors is an integer number (31632223129).

Almost surely, 2^63264446257 is an apocalyptic number.

It is an amenable number.

63264446257 is a deficient number, since it is larger than the sum of its proper divisors (1).

63264446257 is an equidigital number, since it uses as much as digits as its factorization.

63264446257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 49.

The spelling of 63264446257 in words is "sixty-three billion, two hundred sixty-four million, four hundred forty-six thousand, two hundred fifty-seven".