256477622706573 has 8 divisors (see below), whose sum is σ = 343003306098336. Its totient is φ = 170468510559600.

The previous prime is 256477622706553. The next prime is 256477622706587. The reversal of 256477622706573 is 375607226774652.

It is a happy number.

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

It is not a de Polignac number, because 256477622706573 - 2²⁶ = 256477555597709 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 256477622706498 and 256477622706507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256477622706553) 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, 129142810038 + ... + 129142812023.

It is an arithmetic number, because the mean of its divisors is an integer number (42875413262292).

Almost surely, 2^{256477622706573} is an apocalyptic number.

It is an amenable number.

256477622706573 is a deficient number, since it is larger than the sum of its proper divisors (86525683391763).

256477622706573 is a wasteful number, since it uses less digits than its factorization.

256477622706573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258285622395.

The product of its (nonzero) digits is 1244678400, while the sum is 69.

The spelling of 256477622706573 in words is "two hundred fifty-six trillion, four hundred seventy-seven billion, six hundred twenty-two million, seven hundred six thousand, five hundred seventy-three".