75661069313 has 2 divisors, whose sum is σ = 75661069314. Its totient is φ = 75661069312.

The previous prime is 75661069303. The next prime is 75661069331. The reversal of 75661069313 is 31396016657.

Together with next prime (75661069331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52364541889 + 23296527424 = 228833^2 + 152632^2 .

It is a cyclic number.

It is not a de Polignac number, because 75661069313 - 2²² = 75656875009 is a prime.

It is not a weakly prime, because it can be changed into another prime (75661069303) 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, 37830534656 + 37830534657.

It is an arithmetic number, because the mean of its divisors is an integer number (37830534657).

Almost surely, 2^75661069313 is an apocalyptic number.

It is an amenable number.

75661069313 is a deficient number, since it is larger than the sum of its proper divisors (1).

75661069313 is an equidigital number, since it uses as much as digits as its factorization.

75661069313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 47.

The spelling of 75661069313 in words is "seventy-five billion, six hundred sixty-one million, sixty-nine thousand, three hundred thirteen".