256061562010666 has 8 divisors (see below), whose sum is σ = 384468535323684. Its totient is φ = 127905383569440.

The previous prime is 256061562010651. The next prime is 256061562010673. The reversal of 256061562010666 is 666010265160652.

It can be written as a sum of positive squares in 2 ways, for example, as 213180294483025 + 42881267527641 = 14600695^2 + 6548379^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62698715395 + ... + 62698719478.

Almost surely, 2^{256061562010666} is an apocalyptic number.

256061562010666 is a deficient number, since it is larger than the sum of its proper divisors (128406973313018).

256061562010666 is a wasteful number, since it uses less digits than its factorization.

256061562010666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125397435896.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 256061562010666 in words is "two hundred fifty-six trillion, sixty-one billion, five hundred sixty-two million, ten thousand, six hundred sixty-six".