63728713571 has 2 divisors, whose sum is σ = 63728713572. Its totient is φ = 63728713570.

The previous prime is 63728713553. The next prime is 63728713577. The reversal of 63728713571 is 17531782736.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63728713571 - 2²² = 63724519267 is a prime.

It is a super-2 number, since 2×63728713571² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63728713577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31864356785 + 31864356786.

It is an arithmetic number, because the mean of its divisors is an integer number (31864356786).

Almost surely, 2^63728713571 is an apocalyptic number.

63728713571 is a deficient number, since it is larger than the sum of its proper divisors (1).

63728713571 is an equidigital number, since it uses as much as digits as its factorization.

63728713571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1481760, while the sum is 50.

The spelling of 63728713571 in words is "sixty-three billion, seven hundred twenty-eight million, seven hundred thirteen thousand, five hundred seventy-one".