256506101210 has 32 divisors (see below), whose sum is σ = 474227377920. Its totient is φ = 99821460672.

The previous prime is 256506101177. The next prime is 256506101239. The reversal of 256506101210 is 12101605652.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7155311 + ... + 7191069.

It is an arithmetic number, because the mean of its divisors is an integer number (14819605560).

Almost surely, 2^256506101210 is an apocalyptic number.

256506101210 is a deficient number, since it is larger than the sum of its proper divisors (217721276710).

256506101210 is a wasteful number, since it uses less digits than its factorization.

256506101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55190.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 256506101210 its reverse (12101605652), we get a palindrome (268607706862).

The spelling of 256506101210 in words is "two hundred fifty-six billion, five hundred six million, one hundred one thousand, two hundred ten".