256430500006 has 4 divisors (see below), whose sum is σ = 384645750012. Its totient is φ = 128215250002.

The previous prime is 256430499991. The next prime is 256430500009. The reversal of 256430500006 is 600005034652.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256430500009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64107625000 + ... + 64107625003.

It is an arithmetic number, because the mean of its divisors is an integer number (96161437503).

Almost surely, 2^256430500006 is an apocalyptic number.

256430500006 is a deficient number, since it is larger than the sum of its proper divisors (128215250006).

256430500006 is a wasteful number, since it uses less digits than its factorization.

256430500006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128215250005.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 256430500006 its reverse (600005034652), we get a palindrome (856435534658).

The spelling of 256430500006 in words is "two hundred fifty-six billion, four hundred thirty million, five hundred thousand, six".