145631455517 has 2 divisors, whose sum is σ = 145631455518. Its totient is φ = 145631455516.

The previous prime is 145631455513. The next prime is 145631455523. The reversal of 145631455517 is 715554136541.

145631455517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135110645476 + 10520810041 = 367574^2 + 102571^2 .

It is a cyclic number.

It is not a de Polignac number, because 145631455517 - 2² = 145631455513 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145631455513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72815727758 + 72815727759.

It is an arithmetic number, because the mean of its divisors is an integer number (72815727759).

Almost surely, 2^145631455517 is an apocalyptic number.

It is an amenable number.

145631455517 is a deficient number, since it is larger than the sum of its proper divisors (1).

145631455517 is an equidigital number, since it uses as much as digits as its factorization.

145631455517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260000, while the sum is 47.

The spelling of 145631455517 in words is "one hundred forty-five billion, six hundred thirty-one million, four hundred fifty-five thousand, five hundred seventeen".