256660212411 has 16 divisors (see below), whose sum is σ = 382659252000. Its totient is φ = 170016953184.

The previous prime is 256660212409. The next prime is 256660212461. The reversal of 256660212411 is 114212066652.

It is not a de Polignac number, because 256660212411 - 2¹ = 256660212409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256660212461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30269436 + ... + 30277913.

It is an arithmetic number, because the mean of its divisors is an integer number (23916203250).

Almost surely, 2^256660212411 is an apocalyptic number.

256660212411 is a deficient number, since it is larger than the sum of its proper divisors (125999039589).

256660212411 is a wasteful number, since it uses less digits than its factorization.

256660212411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60547515 (or 60547509 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 256660212411 in words is "two hundred fifty-six billion, six hundred sixty million, two hundred twelve thousand, four hundred eleven".