256154143722 has 32 divisors (see below), whose sum is σ = 552424864320. Its totient is φ = 78917834880.

The previous prime is 256154143699. The next prime is 256154143727. The reversal of 256154143722 is 227341451652.

It is a happy number.

256154143722 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256154143722² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256154143727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27397353 + ... + 27406700.

It is an arithmetic number, because the mean of its divisors is an integer number (17263277010).

Almost surely, 2^256154143722 is an apocalyptic number.

256154143722 is an abundant number, since it is smaller than the sum of its proper divisors (296270720598).

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

256154143722 is a wasteful number, since it uses less digits than its factorization.

256154143722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54804118.

The product of its digits is 403200, while the sum is 42.

The spelling of 256154143722 in words is "two hundred fifty-six billion, one hundred fifty-four million, one hundred forty-three thousand, seven hundred twenty-two".