145135512061 has 2 divisors, whose sum is σ = 145135512062. Its totient is φ = 145135512060.

The previous prime is 145135512013. The next prime is 145135512073. The reversal of 145135512061 is 160215531541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105267802500 + 39867709561 = 324450^2 + 199669^2 .

It is a cyclic number.

It is not a de Polignac number, because 145135512061 - 2¹³ = 145135503869 is a prime.

It is a super-2 number, since 2×145135512061² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145135512161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72567756030 + 72567756031.

It is an arithmetic number, because the mean of its divisors is an integer number (72567756031).

Almost surely, 2^145135512061 is an apocalyptic number.

It is an amenable number.

145135512061 is a deficient number, since it is larger than the sum of its proper divisors (1).

145135512061 is an equidigital number, since it uses as much as digits as its factorization.

145135512061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 145135512061 in words is "one hundred forty-five billion, one hundred thirty-five million, five hundred twelve thousand, sixty-one".