69739276561 has 2 divisors, whose sum is σ = 69739276562. Its totient is φ = 69739276560.

The previous prime is 69739276559. The next prime is 69739276567. The reversal of 69739276561 is 16567293796.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65872302336 + 3866974225 = 256656^2 + 62185^2 .

It is a cyclic number.

It is not a de Polignac number, because 69739276561 - 2¹ = 69739276559 is a prime.

Together with 69739276559, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 69739276561.

It is not a weakly prime, because it can be changed into another prime (69739276567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34869638280 + 34869638281.

It is an arithmetic number, because the mean of its divisors is an integer number (34869638281).

Almost surely, 2^69739276561 is an apocalyptic number.

It is an amenable number.

69739276561 is a deficient number, since it is larger than the sum of its proper divisors (1).

69739276561 is an equidigital number, since it uses as much as digits as its factorization.

69739276561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25719120, while the sum is 61.

The spelling of 69739276561 in words is "sixty-nine billion, seven hundred thirty-nine million, two hundred seventy-six thousand, five hundred sixty-one".