63872899457 has 2 divisors, whose sum is σ = 63872899458. Its totient is φ = 63872899456.

The previous prime is 63872899421. The next prime is 63872899459. The reversal of 63872899457 is 75499827836.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62208341056 + 1664558401 = 249416^2 + 40799^2 .

It is a cyclic number.

It is not a de Polignac number, because 63872899457 - 2¹⁸ = 63872637313 is a prime.

Together with 63872899459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63872899459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31936449728 + 31936449729.

It is an arithmetic number, because the mean of its divisors is an integer number (31936449729).

Almost surely, 2^63872899457 is an apocalyptic number.

It is an amenable number.

63872899457 is a deficient number, since it is larger than the sum of its proper divisors (1).

63872899457 is an equidigital number, since it uses as much as digits as its factorization.

63872899457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 182891520, while the sum is 68.

The spelling of 63872899457 in words is "sixty-three billion, eight hundred seventy-two million, eight hundred ninety-nine thousand, four hundred fifty-seven".