45123245121161 has 2 divisors, whose sum is σ = 45123245121162. Its totient is φ = 45123245121160.

The previous prime is 45123245121137. The next prime is 45123245121173. The reversal of 45123245121161 is 16112154232154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27996427057225 + 17126818063936 = 5291165^2 + 4138456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45123245121161 is a prime.

It is a super-2 number, since 2×45123245121161² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45123245121121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22561622560580 + 22561622560581.

It is an arithmetic number, because the mean of its divisors is an integer number (22561622560581).

Almost surely, 2^{45123245121161} is an apocalyptic number.

It is an amenable number.

45123245121161 is a deficient number, since it is larger than the sum of its proper divisors (1).

45123245121161 is an equidigital number, since it uses as much as digits as its factorization.

45123245121161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 38.

The spelling of 45123245121161 in words is "forty-five trillion, one hundred twenty-three billion, two hundred forty-five million, one hundred twenty-one thousand, one hundred sixty-one".