256606623542 has 8 divisors (see below), whose sum is σ = 384953548032. Its totient is φ = 128288774200.

The previous prime is 256606623541. The next prime is 256606623577. The reversal of 256606623542 is 245326606652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256606623541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7246709 + ... + 7282032.

It is an arithmetic number, because the mean of its divisors is an integer number (48119193504).

Almost surely, 2^256606623542 is an apocalyptic number.

256606623542 is a deficient number, since it is larger than the sum of its proper divisors (128346924490).

256606623542 is a wasteful number, since it uses less digits than its factorization.

256606623542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14537574.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 256606623542 in words is "two hundred fifty-six billion, six hundred six million, six hundred twenty-three thousand, five hundred forty-two".