12172060049 has 2 divisors, whose sum is σ = 12172060050. Its totient is φ = 12172060048.

The previous prime is 12172060039. The next prime is 12172060051. The reversal of 12172060049 is 94006027121.

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., 10525323649 + 1646736400 = 102593^2 + 40580^2 .

It is a cyclic number.

It is not a de Polignac number, because 12172060049 - 2¹² = 12172055953 is a prime.

Together with 12172060051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12172059997 and 12172060024.

It is not a weakly prime, because it can be changed into another prime (12172060039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6086030024 + 6086030025.

It is an arithmetic number, because the mean of its divisors is an integer number (6086030025).

Almost surely, 2^12172060049 is an apocalyptic number.

It is an amenable number.

12172060049 is a deficient number, since it is larger than the sum of its proper divisors (1).

12172060049 is an equidigital number, since it uses as much as digits as its factorization.

12172060049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 12172060049 in words is "twelve billion, one hundred seventy-two million, sixty thousand, forty-nine".