69450981073 has 2 divisors, whose sum is σ = 69450981074. Its totient is φ = 69450981072.

The previous prime is 69450981049. The next prime is 69450981133. The reversal of 69450981073 is 37018905496.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59806169809 + 9644811264 = 244553^2 + 98208^2 .

It is a cyclic number.

It is not a de Polignac number, because 69450981073 - 2²¹ = 69448883921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69450981073.

It is not a weakly prime, because it can be changed into another prime (69450981013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34725490536 + 34725490537.

It is an arithmetic number, because the mean of its divisors is an integer number (34725490537).

Almost surely, 2^69450981073 is an apocalyptic number.

It is an amenable number.

69450981073 is a deficient number, since it is larger than the sum of its proper divisors (1).

69450981073 is an equidigital number, since it uses as much as digits as its factorization.

69450981073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 69450981073 in words is "sixty-nine billion, four hundred fifty million, nine hundred eighty-one thousand, seventy-three".