256453503166 has 8 divisors (see below), whose sum is σ = 439634576880. Its totient is φ = 109908644208.

The previous prime is 256453503101. The next prime is 256453503217. The reversal of 256453503166 is 661305354652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×256453503166² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9159053671 + ... + 9159053698.

It is an arithmetic number, because the mean of its divisors is an integer number (54954322110).

Almost surely, 2^256453503166 is an apocalyptic number.

256453503166 is a deficient number, since it is larger than the sum of its proper divisors (183181073714).

256453503166 is a wasteful number, since it uses less digits than its factorization.

256453503166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18318107378.

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 256453503166 in words is "two hundred fifty-six billion, four hundred fifty-three million, five hundred three thousand, one hundred sixty-six".