256507205602626 has 48 divisors (see below), whose sum is σ = 606291543606528. Its totient is φ = 77729227408800.

The previous prime is 256507205602619. The next prime is 256507205602657. The reversal of 256507205602626 is 626206502705652.

256507205602626 is a `hidden beast` number, since 2 + 5 + 6 + 5 + 0 + 7 + 2 + 0 + 5 + 6 + 0 + 2 + 626 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72913056 + ... + 76350036.

It is an arithmetic number, because the mean of its divisors is an integer number (12631073825136).

Almost surely, 2^{256507205602626} is an apocalyptic number.

256507205602626 is an abundant number, since it is smaller than the sum of its proper divisors (349784338003902).

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

256507205602626 is a wasteful number, since it uses less digits than its factorization.

256507205602626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813927 (or 3813924 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 54.

The spelling of 256507205602626 in words is "two hundred fifty-six trillion, five hundred seven billion, two hundred five million, six hundred two thousand, six hundred twenty-six".