253894856668 has 24 divisors (see below), whose sum is σ = 446142863264. Its totient is φ = 126426484800.

The previous prime is 253894856651. The next prime is 253894856713. The reversal of 253894856668 is 866658498352.

It is a junction number, because it is equal to n+sod(n) for n = 253894856597 and 253894856606.

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, 875338 + ... + 1128718.

Almost surely, 2^253894856668 is an apocalyptic number.

It is an amenable number.

253894856668 is a deficient number, since it is larger than the sum of its proper divisors (192248006596).

253894856668 is a wasteful number, since it uses less digits than its factorization.

253894856668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254413 (or 254411 counting only the distinct ones).

The product of its digits is 597196800, while the sum is 70.

The spelling of 253894856668 in words is "two hundred fifty-three billion, eight hundred ninety-four million, eight hundred fifty-six thousand, six hundred sixty-eight".