78322672733 has 2 divisors, whose sum is σ = 78322672734. Its totient is φ = 78322672732.

The previous prime is 78322672669. The next prime is 78322672789. The reversal of 78322672733 is 33727622387.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74836714969 + 3485957764 = 273563^2 + 59042^2 .

It is a cyclic number.

It is not a de Polignac number, because 78322672733 - 2⁶ = 78322672669 is a prime.

It is a super-2 number, since 2×78322672733² (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 (78322672633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39161336366 + 39161336367.

It is an arithmetic number, because the mean of its divisors is an integer number (39161336367).

Almost surely, 2^78322672733 is an apocalyptic number.

It is an amenable number.

78322672733 is a deficient number, since it is larger than the sum of its proper divisors (1).

78322672733 is an equidigital number, since it uses as much as digits as its factorization.

78322672733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 50.

The spelling of 78322672733 in words is "seventy-eight billion, three hundred twenty-two million, six hundred seventy-two thousand, seven hundred thirty-three".