73756665739 has 2 divisors, whose sum is σ = 73756665740. Its totient is φ = 73756665738.

The previous prime is 73756665737. The next prime is 73756665743. The reversal of 73756665739 is 93756665737.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73756665739 - 2¹ = 73756665737 is a prime.

It is a super-2 number, since 2×73756665739² (a number of 23 digits) contains 22 as substring.

Together with 73756665737, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73756665737) 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, 36878332869 + 36878332870.

It is an arithmetic number, because the mean of its divisors is an integer number (36878332870).

Almost surely, 2^73756665739 is an apocalyptic number.

73756665739 is a deficient number, since it is larger than the sum of its proper divisors (1).

73756665739 is an equidigital number, since it uses as much as digits as its factorization.

73756665739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150028200, while the sum is 64.

The spelling of 73756665739 in words is "seventy-three billion, seven hundred fifty-six million, six hundred sixty-five thousand, seven hundred thirty-nine".