73940612069 has 2 divisors, whose sum is σ = 73940612070. Its totient is φ = 73940612068.

The previous prime is 73940612063. The next prime is 73940612093. The reversal of 73940612069 is 96021604937.

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., 72879481444 + 1061130625 = 269962^2 + 32575^2 .

It is a cyclic number.

It is not a de Polignac number, because 73940612069 - 2²⁰ = 73939563493 is a prime.

It is a super-2 number, since 2×73940612069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73940612063) 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, 36970306034 + 36970306035.

It is an arithmetic number, because the mean of its divisors is an integer number (36970306035).

Almost surely, 2^73940612069 is an apocalyptic number.

It is an amenable number.

73940612069 is a deficient number, since it is larger than the sum of its proper divisors (1).

73940612069 is an equidigital number, since it uses as much as digits as its factorization.

73940612069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 47.

The spelling of 73940612069 in words is "seventy-three billion, nine hundred forty million, six hundred twelve thousand, sixty-nine".