69844975493 has 2 divisors, whose sum is σ = 69844975494. Its totient is φ = 69844975492.

The previous prime is 69844975489. The next prime is 69844975547. The reversal of 69844975493 is 39457944896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69594133249 + 250842244 = 263807^2 + 15838^2 .

It is a cyclic number.

It is not a de Polignac number, because 69844975493 - 2² = 69844975489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69844975393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34922487746 + 34922487747.

It is an arithmetic number, because the mean of its divisors is an integer number (34922487747).

Almost surely, 2^69844975493 is an apocalyptic number.

It is an amenable number.

69844975493 is a deficient number, since it is larger than the sum of its proper divisors (1).

69844975493 is an equidigital number, since it uses as much as digits as its factorization.

69844975493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235146240, while the sum is 68.

The spelling of 69844975493 in words is "sixty-nine billion, eight hundred forty-four million, nine hundred seventy-five thousand, four hundred ninety-three".