145117633109 has 2 divisors, whose sum is σ = 145117633110. Its totient is φ = 145117633108.

The previous prime is 145117633093. The next prime is 145117633123. The reversal of 145117633109 is 901336711541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106866879025 + 38250754084 = 326905^2 + 195578^2 .

It is a cyclic number.

It is not a de Polignac number, because 145117633109 - 2⁴ = 145117633093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145117630109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72558816554 + 72558816555.

It is an arithmetic number, because the mean of its divisors is an integer number (72558816555).

Almost surely, 2^145117633109 is an apocalyptic number.

It is an amenable number.

145117633109 is a deficient number, since it is larger than the sum of its proper divisors (1).

145117633109 is an equidigital number, since it uses as much as digits as its factorization.

145117633109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 145117633109 in words is "one hundred forty-five billion, one hundred seventeen million, six hundred thirty-three thousand, one hundred nine".