69928735049 has 2 divisors, whose sum is σ = 69928735050. Its totient is φ = 69928735048.

The previous prime is 69928734989. The next prime is 69928735103. The reversal of 69928735049 is 94053782996.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67451881225 + 2476853824 = 259715^2 + 49768^2 .

It is a cyclic number.

It is not a de Polignac number, because 69928735049 - 2¹² = 69928730953 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 69928734982 and 69928735000.

It is not a weakly prime, because it can be changed into another prime (69928735549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34964367524 + 34964367525.

It is an arithmetic number, because the mean of its divisors is an integer number (34964367525).

Almost surely, 2^69928735049 is an apocalyptic number.

It is an amenable number.

69928735049 is a deficient number, since it is larger than the sum of its proper divisors (1).

69928735049 is an equidigital number, since it uses as much as digits as its factorization.

69928735049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 69928735049 in words is "sixty-nine billion, nine hundred twenty-eight million, seven hundred thirty-five thousand, forty-nine".