42664261831 has 2 divisors, whose sum is σ = 42664261832. Its totient is φ = 42664261830.

The previous prime is 42664261811. The next prime is 42664261853. The reversal of 42664261831 is 13816246624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42664261831 - 2¹⁷ = 42664130759 is a prime.

It is a super-2 number, since 2×42664261831² (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 (42664261811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21332130915 + 21332130916.

It is an arithmetic number, because the mean of its divisors is an integer number (21332130916).

Almost surely, 2^42664261831 is an apocalyptic number.

42664261831 is a deficient number, since it is larger than the sum of its proper divisors (1).

42664261831 is an equidigital number, since it uses as much as digits as its factorization.

42664261831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 43.

The spelling of 42664261831 in words is "forty-two billion, six hundred sixty-four million, two hundred sixty-one thousand, eight hundred thirty-one".