145040042177 has 2 divisors, whose sum is σ = 145040042178. Its totient is φ = 145040042176.

The previous prime is 145040042153. The next prime is 145040042219. The reversal of 145040042177 is 771240040541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134090721856 + 10949320321 = 366184^2 + 104639^2 .

It is a cyclic number.

It is not a de Polignac number, because 145040042177 - 2³⁰ = 143966300353 is a prime.

It is a super-2 number, since 2×145040042177² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145040042107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72520021088 + 72520021089.

It is an arithmetic number, because the mean of its divisors is an integer number (72520021089).

Almost surely, 2^145040042177 is an apocalyptic number.

It is an amenable number.

145040042177 is a deficient number, since it is larger than the sum of its proper divisors (1).

145040042177 is an equidigital number, since it uses as much as digits as its factorization.

145040042177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 35.

The spelling of 145040042177 in words is "one hundred forty-five billion, forty million, forty-two thousand, one hundred seventy-seven".