894639334656 has 72 divisors (see below), whose sum is σ = 2457853291264. Its totient is φ = 288593326080.

The previous prime is 894639334643. The next prime is 894639334663. The reversal of 894639334656 is 656433936498.

It is a super-2 number, since 2×894639334656² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a congruent 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, 18764821 + ... + 18812436.

Almost surely, 2^894639334656 is an apocalyptic number.

It is an amenable number.

894639334656 is an abundant number, since it is smaller than the sum of its proper divisors (1563213956608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

894639334656 is a wasteful number, since it uses less digits than its factorization.

894639334656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37577307 (or 37577293 counting only the distinct ones).

The product of its digits is 302330880, while the sum is 66.

The spelling of 894639334656 in words is "eight hundred ninety-four billion, six hundred thirty-nine million, three hundred thirty-four thousand, six hundred fifty-six".