150015128509 has 2 divisors, whose sum is σ = 150015128510. Its totient is φ = 150015128508.

The previous prime is 150015128323. The next prime is 150015128513. The reversal of 150015128509 is 905821510051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105363212409 + 44651916100 = 324597^2 + 211310^2 .

It is a cyclic number.

It is not a de Polignac number, because 150015128509 - 2¹¹ = 150015126461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150015120509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75007564254 + 75007564255.

It is an arithmetic number, because the mean of its divisors is an integer number (75007564255).

Almost surely, 2^150015128509 is an apocalyptic number.

It is an amenable number.

150015128509 is a deficient number, since it is larger than the sum of its proper divisors (1).

150015128509 is an equidigital number, since it uses as much as digits as its factorization.

150015128509 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 37.

The spelling of 150015128509 in words is "one hundred fifty billion, fifteen million, one hundred twenty-eight thousand, five hundred nine".