256092651861 has 8 divisors (see below), whose sum is σ = 341510948064. Its totient is φ = 170701395120.

The previous prime is 256092651847. The next prime is 256092651901. The reversal of 256092651861 is 168156290652.

It is a happy number.

256092651861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 256092651861 - 2⁶ = 256092651797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256092251861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6737755 + ... + 6775656.

It is an arithmetic number, because the mean of its divisors is an integer number (42688868508).

Almost surely, 2^256092651861 is an apocalyptic number.

It is an amenable number.

256092651861 is a deficient number, since it is larger than the sum of its proper divisors (85418296203).

256092651861 is a wasteful number, since it uses less digits than its factorization.

256092651861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13519731.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 256092651861 in words is "two hundred fifty-six billion, ninety-two million, six hundred fifty-one thousand, eight hundred sixty-one".