256477700522403 has 6 divisors (see below), whose sum is σ = 370467789643484. Its totient is φ = 170985133681596.

The previous prime is 256477700522297. The next prime is 256477700522473. The reversal of 256477700522403 is 304225007774652.

256477700522403 is a `hidden beast` number, since 2 + 5 + 6 + 4 + 7 + 7 + 70 + 0 + 522 + 40 + 3 = 666.

It is not a de Polignac number, because 256477700522403 - 2³⁴ = 256460520653219 is a prime.

It is a super-3 number, since 3×256477700522403³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256477700522403.

It is not an unprimeable number, because it can be changed into a prime (256477700522473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14248761140125 + ... + 14248761140142.

Almost surely, 2^{256477700522403} is an apocalyptic number.

256477700522403 is a deficient number, since it is larger than the sum of its proper divisors (113990089121081).

256477700522403 is a wasteful number, since it uses less digits than its factorization.

256477700522403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28497522280273 (or 28497522280270 counting only the distinct ones).

The product of its (nonzero) digits is 19756800, while the sum is 54.

The spelling of 256477700522403 in words is "two hundred fifty-six trillion, four hundred seventy-seven billion, seven hundred million, five hundred twenty-two thousand, four hundred three".