256516606261334 has 16 divisors (see below), whose sum is σ = 390595012209600. Its totient is φ = 126319025659464.

The previous prime is 256516606261313. The next prime is 256516606261373. The reversal of 256516606261334 is 433162606615652.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 256516606261334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188519864 + ... + 189875675.

It is an arithmetic number, because the mean of its divisors is an integer number (24412188263100).

Almost surely, 2^{256516606261334} is an apocalyptic number.

256516606261334 is a deficient number, since it is larger than the sum of its proper divisors (134078405948266).

256516606261334 is a wasteful number, since it uses less digits than its factorization.

256516606261334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378400667.

The product of its (nonzero) digits is 27993600, while the sum is 56.

The spelling of 256516606261334 in words is "two hundred fifty-six trillion, five hundred sixteen billion, six hundred six million, two hundred sixty-one thousand, three hundred thirty-four".