1512217838531 has 2 divisors, whose sum is σ = 1512217838532. Its totient is φ = 1512217838530.

The previous prime is 1512217838501. The next prime is 1512217838533. The reversal of 1512217838531 is 1358387122151.

It is a strong prime.

It is an emirp because it is prime and its reverse (1358387122151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1512217838531 - 2²⁶ = 1512150729667 is a prime.

It is a super-2 number, since 2×1512217838531² (a number of 25 digits) contains 22 as substring.

Together with 1512217838533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1512217838533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756108919265 + 756108919266.

It is an arithmetic number, because the mean of its divisors is an integer number (756108919266).

Almost surely, 2^{1512217838531} is an apocalyptic number.

1512217838531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1512217838531 is an equidigital number, since it uses as much as digits as its factorization.

1512217838531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 47.

The spelling of 1512217838531 in words is "one trillion, five hundred twelve billion, two hundred seventeen million, eight hundred thirty-eight thousand, five hundred thirty-one".