42661316627 has 2 divisors, whose sum is σ = 42661316628. Its totient is φ = 42661316626.

The previous prime is 42661316603. The next prime is 42661316639. The reversal of 42661316627 is 72661316624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42661316627 - 2¹² = 42661312531 is a prime.

It is not a weakly prime, because it can be changed into another prime (42661316657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21330658313 + 21330658314.

It is an arithmetic number, because the mean of its divisors is an integer number (21330658314).

Almost surely, 2^42661316627 is an apocalyptic number.

42661316627 is a deficient number, since it is larger than the sum of its proper divisors (1).

42661316627 is an equidigital number, since it uses as much as digits as its factorization.

42661316627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 44.

The spelling of 42661316627 in words is "forty-two billion, six hundred sixty-one million, three hundred sixteen thousand, six hundred twenty-seven".