64450350056 has 32 divisors (see below), whose sum is σ = 125604021600. Its totient is φ = 30966479040.

The previous prime is 64450350049. The next prime is 64450350077. The reversal of 64450350056 is 65005305446.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609350 + ... + 707253.

It is an arithmetic number, because the mean of its divisors is an integer number (3925125675).

Almost surely, 2^64450350056 is an apocalyptic number.

It is an amenable number.

64450350056 is a deficient number, since it is larger than the sum of its proper divisors (61153671544).

64450350056 is a wasteful number, since it uses less digits than its factorization.

64450350056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316849 (or 1316845 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 64450350056 in words is "sixty-four billion, four hundred fifty million, three hundred fifty thousand, fifty-six".