64351774450 has 12 divisors (see below), whose sum is σ = 119694300570. Its totient is φ = 25740709760.

The previous prime is 64351774441. The next prime is 64351774453. The reversal of 64351774450 is 5447715346.

It can be written as a sum of positive squares in 3 ways, for example, as 60650390529 + 3701383921 = 246273^2 + 60839^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64351774450.

It is not an unprimeable number, because it can be changed into a prime (64351774453) 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, 643517695 + ... + 643517794.

Almost surely, 2^64351774450 is an apocalyptic number.

64351774450 is a deficient number, since it is larger than the sum of its proper divisors (55342526120).

64351774450 is a wasteful number, since it uses less digits than its factorization.

64351774450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287035501 (or 1287035496 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 46.

The spelling of 64351774450 in words is "sixty-four billion, three hundred fifty-one million, seven hundred seventy-four thousand, four hundred fifty".