56234511209 has 2 divisors, whose sum is σ = 56234511210. Its totient is φ = 56234511208.

The previous prime is 56234511187. The next prime is 56234511241. The reversal of 56234511209 is 90211543265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56143880809 + 90630400 = 236947^2 + 9520^2 .

It is a cyclic number.

It is not a de Polignac number, because 56234511209 - 2²⁰ = 56233462633 is a prime.

It is not a weakly prime, because it can be changed into another prime (56234511269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28117255604 + 28117255605.

It is an arithmetic number, because the mean of its divisors is an integer number (28117255605).

Almost surely, 2^56234511209 is an apocalyptic number.

It is an amenable number.

56234511209 is a deficient number, since it is larger than the sum of its proper divisors (1).

56234511209 is an equidigital number, since it uses as much as digits as its factorization.

56234511209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 56234511209 in words is "fifty-six billion, two hundred thirty-four million, five hundred eleven thousand, two hundred nine".