1006531962521 has 2 divisors, whose sum is σ = 1006531962522. Its totient is φ = 1006531962520.

The previous prime is 1006531962467. The next prime is 1006531962523. The reversal of 1006531962521 is 1252691356001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 766431962521 + 240100000000 = 875461^2 + 490000^2 .

It is an emirp because it is prime and its reverse (1252691356001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1006531962521 is a prime.

Together with 1006531962523, 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 (1006531962523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503265981260 + 503265981261.

It is an arithmetic number, because the mean of its divisors is an integer number (503265981261).

Almost surely, 2^{1006531962521} is an apocalyptic number.

It is an amenable number.

1006531962521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006531962521 is an equidigital number, since it uses as much as digits as its factorization.

1006531962521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 1006531962521 in words is "one trillion, six billion, five hundred thirty-one million, nine hundred sixty-two thousand, five hundred twenty-one".