245120043101173 has 2 divisors, whose sum is σ = 245120043101174. Its totient is φ = 245120043101172.

The previous prime is 245120043101161. The next prime is 245120043101183. The reversal of 245120043101173 is 371101340021542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174238495203249 + 70881547897924 = 13199943^2 + 8419118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245120043101173 is a prime.

It is a super-2 number, since 2×245120043101173² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245120043101183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122560021550586 + 122560021550587.

It is an arithmetic number, because the mean of its divisors is an integer number (122560021550587).

Almost surely, 2^{245120043101173} is an apocalyptic number.

It is an amenable number.

245120043101173 is a deficient number, since it is larger than the sum of its proper divisors (1).

245120043101173 is an equidigital number, since it uses as much as digits as its factorization.

245120043101173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 245120043101173 in words is "two hundred forty-five trillion, one hundred twenty billion, forty-three million, one hundred one thousand, one hundred seventy-three".