256004706873 has 8 divisors (see below), whose sum is σ = 344653586368. Its totient is φ = 169012815984.

The previous prime is 256004706869. The next prime is 256004706907. The reversal of 256004706873 is 378607400652.

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

It is not a de Polignac number, because 256004706873 - 2² = 256004706869 is a prime.

It is a super-2 number, since 2×256004706873² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256004706823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414246790 + ... + 414247407.

It is an arithmetic number, because the mean of its divisors is an integer number (43081698296).

Almost surely, 2^256004706873 is an apocalyptic number.

It is an amenable number.

256004706873 is a deficient number, since it is larger than the sum of its proper divisors (88648879495).

256004706873 is a wasteful number, since it uses less digits than its factorization.

256004706873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828494303.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 256004706873 in words is "two hundred fifty-six billion, four million, seven hundred six thousand, eight hundred seventy-three".