56056656655511 has 2 divisors, whose sum is σ = 56056656655512. Its totient is φ = 56056656655510.

The previous prime is 56056656655487. The next prime is 56056656655541. The reversal of 56056656655511 is 11555665665065.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56056656655511 - 2¹⁴ = 56056656639127 is a prime.

It is a super-2 number, since 2×56056656655511² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56056656655541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28028328327755 + 28028328327756.

It is an arithmetic number, because the mean of its divisors is an integer number (28028328327756).

Almost surely, 2^{56056656655511} is an apocalyptic number.

56056656655511 is a deficient number, since it is larger than the sum of its proper divisors (1).

56056656655511 is an equidigital number, since it uses as much as digits as its factorization.

56056656655511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121500000, while the sum is 62.

The spelling of 56056656655511 in words is "fifty-six trillion, fifty-six billion, six hundred fifty-six million, six hundred fifty-five thousand, five hundred eleven".