42466627381 has 2 divisors, whose sum is σ = 42466627382. Its totient is φ = 42466627380.

The previous prime is 42466627363. The next prime is 42466627387. The reversal of 42466627381 is 18372666424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22367894481 + 20098732900 = 149559^2 + 141770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42466627381 is a prime.

It is a super-2 number, since 2×42466627381² (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 (42466627387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21233313690 + 21233313691.

It is an arithmetic number, because the mean of its divisors is an integer number (21233313691).

Almost surely, 2^42466627381 is an apocalyptic number.

It is an amenable number.

42466627381 is a deficient number, since it is larger than the sum of its proper divisors (1).

42466627381 is an equidigital number, since it uses as much as digits as its factorization.

42466627381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 49.

The spelling of 42466627381 in words is "forty-two billion, four hundred sixty-six million, six hundred twenty-seven thousand, three hundred eighty-one".