256531100572007 has 8 divisors (see below), whose sum is σ = 258888060491280. Its totient is φ = 254174203627200.

The previous prime is 256531100571979. The next prime is 256531100572031. The reversal of 256531100572007 is 700275001135652.

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

It is a cyclic number.

It is not a de Polignac number, because 256531100572007 - 2⁸ = 256531100571751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256531100572507) 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, 7539494 + ... + 23872707.

It is an arithmetic number, because the mean of its divisors is an integer number (32361007561410).

Almost surely, 2^{256531100572007} is an apocalyptic number.

256531100572007 is a deficient number, since it is larger than the sum of its proper divisors (2356959919273).

256531100572007 is a wasteful number, since it uses less digits than its factorization.

256531100572007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31487233.

The product of its (nonzero) digits is 441000, while the sum is 44.

The spelling of 256531100572007 in words is "two hundred fifty-six trillion, five hundred thirty-one billion, one hundred million, five hundred seventy-two thousand, seven".