73756665737 has 2 divisors, whose sum is σ = 73756665738. Its totient is φ = 73756665736.

The previous prime is 73756665701. The next prime is 73756665739.

73756665737 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43640881216 + 30115784521 = 208904^2 + 173539^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 73756665737 - 2⁸ = 73756665481 is a prime.

Together with 73756665739, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73756665737.

It is not a weakly prime, because it can be changed into another prime (73756665739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36878332868 + 36878332869.

It is an arithmetic number, because the mean of its divisors is an integer number (36878332869).

Almost surely, 2^73756665737 is an apocalyptic number.

It is an amenable number.

73756665737 is a deficient number, since it is larger than the sum of its proper divisors (1).

73756665737 is an equidigital number, since it uses as much as digits as its factorization.

73756665737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116688600, while the sum is 62.

The spelling of 73756665737 in words is "seventy-three billion, seven hundred fifty-six million, six hundred sixty-five thousand, seven hundred thirty-seven".