42664261811 has 2 divisors, whose sum is σ = 42664261812. Its totient is φ = 42664261810.

The previous prime is 42664261777. The next prime is 42664261831. The reversal of 42664261811 is 11816246624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42664261811 - 2²² = 42660067507 is a prime.

It is not a weakly prime, because it can be changed into another prime (42664261831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21332130905 + 21332130906.

It is an arithmetic number, because the mean of its divisors is an integer number (21332130906).

Almost surely, 2^42664261811 is an apocalyptic number.

42664261811 is a deficient number, since it is larger than the sum of its proper divisors (1).

42664261811 is an equidigital number, since it uses as much as digits as its factorization.

42664261811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 41.

The spelling of 42664261811 in words is "forty-two billion, six hundred sixty-four million, two hundred sixty-one thousand, eight hundred eleven".