69639426673 has 2 divisors, whose sum is σ = 69639426674. Its totient is φ = 69639426672.

The previous prime is 69639426667. The next prime is 69639426719. The reversal of 69639426673 is 37662493696.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45108662544 + 24530764129 = 212388^2 + 156623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69639426673 is a prime.

It is not a weakly prime, because it can be changed into another prime (69639426613) 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, 34819713336 + 34819713337.

It is an arithmetic number, because the mean of its divisors is an integer number (34819713337).

Almost surely, 2^69639426673 is an apocalyptic number.

It is an amenable number.

69639426673 is a deficient number, since it is larger than the sum of its proper divisors (1).

69639426673 is an equidigital number, since it uses as much as digits as its factorization.

69639426673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52907904, while the sum is 61.

The spelling of 69639426673 in words is "sixty-nine billion, six hundred thirty-nine million, four hundred twenty-six thousand, six hundred seventy-three".