42069691194437 has 2 divisors, whose sum is σ = 42069691194438. Its totient is φ = 42069691194436.

The previous prime is 42069691194359. The next prime is 42069691194529. The reversal of 42069691194437 is 73449119696024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34197396405316 + 7872294789121 = 5847854^2 + 2805761^2 .

It is a cyclic number.

It is not a de Polignac number, because 42069691194437 - 2¹² = 42069691190341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42069691190437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21034845597218 + 21034845597219.

It is an arithmetic number, because the mean of its divisors is an integer number (21034845597219).

Almost surely, 2^{42069691194437} is an apocalyptic number.

It is an amenable number.

42069691194437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42069691194437 is an equidigital number, since it uses as much as digits as its factorization.

42069691194437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70543872, while the sum is 65.

The spelling of 42069691194437 in words is "forty-two trillion, sixty-nine billion, six hundred ninety-one million, one hundred ninety-four thousand, four hundred thirty-seven".