72324756056669 has 2 divisors, whose sum is σ = 72324756056670. Its totient is φ = 72324756056668.

The previous prime is 72324756056593. The next prime is 72324756056689. The reversal of 72324756056669 is 96665065742327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47976817840900 + 24347938215769 = 6926530^2 + 4934363^2 .

It is an emirp because it is prime and its reverse (96665065742327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72324756056669 - 2²⁴ = 72324739279453 is a prime.

It is a super-2 number, since 2×72324756056669² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72324756056599 and 72324756056608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72324756056689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36162378028334 + 36162378028335.

It is an arithmetic number, because the mean of its divisors is an integer number (36162378028335).

Almost surely, 2^{72324756056669} is an apocalyptic number.

It is an amenable number.

72324756056669 is a deficient number, since it is larger than the sum of its proper divisors (1).

72324756056669 is an equidigital number, since it uses as much as digits as its factorization.

72324756056669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 685843200, while the sum is 68.

The spelling of 72324756056669 in words is "seventy-two trillion, three hundred twenty-four billion, seven hundred fifty-six million, fifty-six thousand, six hundred sixty-nine".