256279447152 has 50 divisors (see below), whose sum is σ = 741747076488. Its totient is φ = 85426481952.

The previous prime is 256279447097. The next prime is 256279447153. The reversal of 256279447152 is 251744972652.

It is a happy number.

256279447152 is a `hidden beast` number, since 2 + 5 + 627 + 9 + 4 + 4 + 7 + 1 + 5 + 2 = 666.

256279447152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256279447152² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256279447153) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 98871948 + ... + 98874539.

Almost surely, 2^256279447152 is an apocalyptic number.

It is an amenable number.

256279447152 is an abundant number, since it is smaller than the sum of its proper divisors (485467629336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256279447152 is a wasteful number, since it uses less digits than its factorization.

256279447152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197746507 (or 197746492 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 256279447152 in words is "two hundred fifty-six billion, two hundred seventy-nine million, four hundred forty-seven thousand, one hundred fifty-two".