256134642150120 has 64 divisors (see below), whose sum is σ = 808846238376000. Its totient is φ = 64707699068928.

The previous prime is 256134642150097. The next prime is 256134642150131. The reversal of 256134642150120 is 21051246431652.

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, 56169875385 + ... + 56169879944.

It is an arithmetic number, because the mean of its divisors is an integer number (12638222474625).

Almost surely, 2^{256134642150120} is an apocalyptic number.

256134642150120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256134642150120 is an abundant number, since it is smaller than the sum of its proper divisors (552711596225880).

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

256134642150120 is a wasteful number, since it uses less digits than its factorization.

256134642150120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112339755362 (or 112339755358 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

Adding to 256134642150120 its reverse (21051246431652), we get a palindrome (277185888581772).

The spelling of 256134642150120 in words is "two hundred fifty-six trillion, one hundred thirty-four billion, six hundred forty-two million, one hundred fifty thousand, one hundred twenty".