15256565414287 has 2 divisors, whose sum is σ = 15256565414288. Its totient is φ = 15256565414286.

The previous prime is 15256565414281. The next prime is 15256565414381. The reversal of 15256565414287 is 78241456565251.

15256565414287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15256565414287 - 2³¹ = 15254417930639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15256565414281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7628282707143 + 7628282707144.

It is an arithmetic number, because the mean of its divisors is an integer number (7628282707144).

Almost surely, 2^{15256565414287} is an apocalyptic number.

15256565414287 is a deficient number, since it is larger than the sum of its proper divisors (1).

15256565414287 is an equidigital number, since it uses as much as digits as its factorization.

15256565414287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640000, while the sum is 61.

The spelling of 15256565414287 in words is "fifteen trillion, two hundred fifty-six billion, five hundred sixty-five million, four hundred fourteen thousand, two hundred eighty-seven".