30172744769 has 2 divisors, whose sum is σ = 30172744770. Its totient is φ = 30172744768.

The previous prime is 30172744759. The next prime is 30172744813. The reversal of 30172744769 is 96744727103.

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., 27859615744 + 2313129025 = 166912^2 + 48095^2 .

It is a cyclic number.

It is not a de Polignac number, because 30172744769 - 2⁴ = 30172744753 is a prime.

It is a super-2 number, since 2×30172744769² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30172744759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15086372384 + 15086372385.

It is an arithmetic number, because the mean of its divisors is an integer number (15086372385).

Almost surely, 2^30172744769 is an apocalyptic number.

It is an amenable number.

30172744769 is a deficient number, since it is larger than the sum of its proper divisors (1).

30172744769 is an equidigital number, since it uses as much as digits as its factorization.

30172744769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 50.

The spelling of 30172744769 in words is "thirty billion, one hundred seventy-two million, seven hundred forty-four thousand, seven hundred sixty-nine".