256539746154 has 32 divisors (see below), whose sum is σ = 523420908480. Its totient is φ = 83804602752.

The previous prime is 256539746129. The next prime is 256539746189. The reversal of 256539746154 is 451647935652.

256539746154 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 256539746094 and 256539746103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1796544 + ... + 1934075.

It is an arithmetic number, because the mean of its divisors is an integer number (16356903390).

Almost surely, 2^256539746154 is an apocalyptic number.

256539746154 is an abundant number, since it is smaller than the sum of its proper divisors (266881162326).

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

256539746154 is a wasteful number, since it uses less digits than its factorization.

256539746154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730854.

The product of its digits is 27216000, while the sum is 57.

The spelling of 256539746154 in words is "two hundred fifty-six billion, five hundred thirty-nine million, seven hundred forty-six thousand, one hundred fifty-four".