30136672169 has 2 divisors, whose sum is σ = 30136672170. Its totient is φ = 30136672168.

The previous prime is 30136672147. The next prime is 30136672183. The reversal of 30136672169 is 96127663103.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25287360400 + 4849311769 = 159020^2 + 69637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30136672169 is a prime.

It is a super-2 number, since 2×30136672169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30136672129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15068336084 + 15068336085.

It is an arithmetic number, because the mean of its divisors is an integer number (15068336085).

Almost surely, 2^30136672169 is an apocalyptic number.

It is an amenable number.

30136672169 is a deficient number, since it is larger than the sum of its proper divisors (1).

30136672169 is an equidigital number, since it uses as much as digits as its factorization.

30136672169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 30136672169 in words is "thirty billion, one hundred thirty-six million, six hundred seventy-two thousand, one hundred sixty-nine".