42144346511 has 2 divisors, whose sum is σ = 42144346512. Its totient is φ = 42144346510.

The previous prime is 42144346471. The next prime is 42144346537. The reversal of 42144346511 is 11564344124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42144346511 is a prime.

It is a super-2 number, since 2×42144346511² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42144346571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21072173255 + 21072173256.

It is an arithmetic number, because the mean of its divisors is an integer number (21072173256).

Almost surely, 2^42144346511 is an apocalyptic number.

42144346511 is a deficient number, since it is larger than the sum of its proper divisors (1).

42144346511 is an equidigital number, since it uses as much as digits as its factorization.

42144346511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 35.

The spelling of 42144346511 in words is "forty-two billion, one hundred forty-four million, three hundred forty-six thousand, five hundred eleven".