145364015509 has 2 divisors, whose sum is σ = 145364015510. Its totient is φ = 145364015508.

The previous prime is 145364015479. The next prime is 145364015551. The reversal of 145364015509 is 905510463541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140697759409 + 4666256100 = 375097^2 + 68310^2 .

It is an emirp because it is prime and its reverse (905510463541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145364015509 - 2⁵ = 145364015477 is a prime.

It is a super-2 number, since 2×145364015509² (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 (145364010509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72682007754 + 72682007755.

It is an arithmetic number, because the mean of its divisors is an integer number (72682007755).

Almost surely, 2^145364015509 is an apocalyptic number.

It is an amenable number.

145364015509 is a deficient number, since it is larger than the sum of its proper divisors (1).

145364015509 is an equidigital number, since it uses as much as digits as its factorization.

145364015509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 145364015509 in words is "one hundred forty-five billion, three hundred sixty-four million, fifteen thousand, five hundred nine".