66042104431 has 2 divisors, whose sum is σ = 66042104432. Its totient is φ = 66042104430.

The previous prime is 66042104393. The next prime is 66042104467. The reversal of 66042104431 is 13440124066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66042104431 - 2¹¹ = 66042102383 is a prime.

It is a super-2 number, since 2×66042104431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66042104393 and 66042104402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66042101431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33021052215 + 33021052216.

It is an arithmetic number, because the mean of its divisors is an integer number (33021052216).

Almost surely, 2^66042104431 is an apocalyptic number.

66042104431 is a deficient number, since it is larger than the sum of its proper divisors (1).

66042104431 is an equidigital number, since it uses as much as digits as its factorization.

66042104431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 66042104431 its reverse (13440124066), we get a palindrome (79482228497).

The spelling of 66042104431 in words is "sixty-six billion, forty-two million, one hundred four thousand, four hundred thirty-one".