256477633150444 has 24 divisors (see below), whose sum is σ = 454628145828528. Its totient is φ = 126586493709120.

The previous prime is 256477633150423. The next prime is 256477633150481. The reversal of 256477633150444 is 444051336774652.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326670987 + ... + 327455170.

It is an arithmetic number, because the mean of its divisors is an integer number (18942839409522).

Almost surely, 2^{256477633150444} is an apocalyptic number.

It is an amenable number.

256477633150444 is a deficient number, since it is larger than the sum of its proper divisors (198150512678084).

256477633150444 is a wasteful number, since it uses less digits than its factorization.

256477633150444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654127425 (or 654127423 counting only the distinct ones).

The product of its (nonzero) digits is 203212800, while the sum is 61.

The spelling of 256477633150444 in words is "two hundred fifty-six trillion, four hundred seventy-seven billion, six hundred thirty-three million, one hundred fifty thousand, four hundred forty-four".