69035940791989 has 2 divisors, whose sum is σ = 69035940791990. Its totient is φ = 69035940791988.

The previous prime is 69035940791971. The next prime is 69035940792011. The reversal of 69035940791989 is 98919704953096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54187118216100 + 14848822575889 = 7361190^2 + 3853417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69035940791989 is a prime.

It is a super-2 number, since 2×69035940791989² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69035940791189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34517970395994 + 34517970395995.

It is an arithmetic number, because the mean of its divisors is an integer number (34517970395995).

Almost surely, 2^{69035940791989} is an apocalyptic number.

It is an amenable number.

69035940791989 is a deficient number, since it is larger than the sum of its proper divisors (1).

69035940791989 is an equidigital number, since it uses as much as digits as its factorization.

69035940791989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1190427840, while the sum is 79.

The spelling of 69035940791989 in words is "sixty-nine trillion, thirty-five billion, nine hundred forty million, seven hundred ninety-one thousand, nine hundred eighty-nine".