256700555830 has 32 divisors (see below), whose sum is σ = 486505582560. Its totient is φ = 97250883840.

The previous prime is 256700555809. The next prime is 256700555843. The reversal of 256700555830 is 38555007652.

It is a happy number.

256700555830 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571770 + ... + 916690.

It is an arithmetic number, because the mean of its divisors is an integer number (15203299455).

Almost surely, 2^256700555830 is an apocalyptic number.

256700555830 is a deficient number, since it is larger than the sum of its proper divisors (229805026730).

256700555830 is a wasteful number, since it uses less digits than its factorization.

256700555830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348864.

The product of its (nonzero) digits is 1260000, while the sum is 46.

The spelling of 256700555830 in words is "two hundred fifty-six billion, seven hundred million, five hundred fifty-five thousand, eight hundred thirty".