63923594450 has 12 divisors (see below), whose sum is σ = 118897885770. Its totient is φ = 25569437760.

The previous prime is 63923594431. The next prime is 63923594453. The reversal of 63923594450 is 5449532936.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 47457315409 + 16466279041 = 217847^2 + 128321^2 .

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 1278471889 = 63923594450 / (6 + 3 + 9 + 2 + 3 + 5 + 9 + 4 + 4 + 5 + 0).

It is not an unprimeable number, because it can be changed into a prime (63923594453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 639235895 + ... + 639235994.

Almost surely, 2^63923594450 is an apocalyptic number.

63923594450 is a deficient number, since it is larger than the sum of its proper divisors (54974291320).

63923594450 is a wasteful number, since it uses less digits than its factorization.

63923594450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278471901 (or 1278471896 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 50.

The spelling of 63923594450 in words is "sixty-three billion, nine hundred twenty-three million, five hundred ninety-four thousand, four hundred fifty".