56159156636887 has 2 divisors, whose sum is σ = 56159156636888. Its totient is φ = 56159156636886.

The previous prime is 56159156636837. The next prime is 56159156636911. The reversal of 56159156636887 is 78863665195165.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56159156636887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56159156636837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28079578318443 + 28079578318444.

It is an arithmetic number, because the mean of its divisors is an integer number (28079578318444).

Almost surely, 2^{56159156636887} is an apocalyptic number.

56159156636887 is a deficient number, since it is larger than the sum of its proper divisors (1).

56159156636887 is an equidigital number, since it uses as much as digits as its factorization.

56159156636887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552000, while the sum is 76.

The spelling of 56159156636887 in words is "fifty-six trillion, one hundred fifty-nine billion, one hundred fifty-six million, six hundred thirty-six thousand, eight hundred eighty-seven".