56611000447 has 2 divisors, whose sum is σ = 56611000448. Its totient is φ = 56611000446.

The previous prime is 56611000423. The next prime is 56611000487. The reversal of 56611000447 is 74400011665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56611000447 - 2⁷ = 56611000319 is a prime.

It is a super-2 number, since 2×56611000447² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56611000487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28305500223 + 28305500224.

It is an arithmetic number, because the mean of its divisors is an integer number (28305500224).

Almost surely, 2^56611000447 is an apocalyptic number.

56611000447 is a deficient number, since it is larger than the sum of its proper divisors (1).

56611000447 is an equidigital number, since it uses as much as digits as its factorization.

56611000447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 56611000447 in words is "fifty-six billion, six hundred eleven million, four hundred forty-seven", and thus it is an aban number.