256477564601354 has 8 divisors (see below), whose sum is σ = 385241198673540. Its totient is φ = 128063831710176.

The previous prime is 256477564601231. The next prime is 256477564601369. The reversal of 256477564601354 is 453106465774652.

It can be written as a sum of positive squares in 2 ways, for example, as 198951786670729 + 57525777930625 = 14105027^2 + 7584575^2 .

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

It is a super-2 number, since 2×256477564601354² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87475293419 + ... + 87475296350.

Almost surely, 2^{256477564601354} is an apocalyptic number.

256477564601354 is a deficient number, since it is larger than the sum of its proper divisors (128763634072186).

256477564601354 is a wasteful number, since it uses less digits than its factorization.

256477564601354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174950590504.

The product of its (nonzero) digits is 508032000, while the sum is 65.

The spelling of 256477564601354 in words is "two hundred fifty-six trillion, four hundred seventy-seven billion, five hundred sixty-four million, six hundred one thousand, three hundred fifty-four".