1015205132497 has 2 divisors, whose sum is σ = 1015205132498. Its totient is φ = 1015205132496.

The previous prime is 1015205132489. The next prime is 1015205132503. The reversal of 1015205132497 is 7942315025101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 986031126081 + 29174006416 = 992991^2 + 170804^2 .

It is a cyclic number.

It is not a de Polignac number, because 1015205132497 - 2³ = 1015205132489 is a prime.

It is a super-2 number, since 2×1015205132497² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1015205132437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507602566248 + 507602566249.

It is an arithmetic number, because the mean of its divisors is an integer number (507602566249).

Almost surely, 2^{1015205132497} is an apocalyptic number.

It is an amenable number.

1015205132497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1015205132497 is an equidigital number, since it uses as much as digits as its factorization.

1015205132497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 1015205132497 in words is "one trillion, fifteen billion, two hundred five million, one hundred thirty-two thousand, four hundred ninety-seven".