63850868449 has 4 divisors (see below), whose sum is σ = 64203635860. Its totient is φ = 63498101040.

The previous prime is 63850868443. The next prime is 63850868453. The reversal of 63850868449 is 94486805836.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13469923600 + 50380944849 = 116060^2 + 224457^2 .

It is a cyclic number.

It is not a de Polignac number, because 63850868449 - 2⁹ = 63850867937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63850868443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176383434 + ... + 176383795.

It is an arithmetic number, because the mean of its divisors is an integer number (16050908965).

Almost surely, 2^63850868449 is an apocalyptic number.

It is an amenable number.

63850868449 is a deficient number, since it is larger than the sum of its proper divisors (352767411).

63850868449 is a wasteful number, since it uses less digits than its factorization.

63850868449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352767410.

The product of its (nonzero) digits is 39813120, while the sum is 61.

The spelling of 63850868449 in words is "sixty-three billion, eight hundred fifty million, eight hundred sixty-eight thousand, four hundred forty-nine".