1021634274613 has 2 divisors, whose sum is σ = 1021634274614. Its totient is φ = 1021634274612.

The previous prime is 1021634274611. The next prime is 1021634274637. The reversal of 1021634274613 is 3164724361201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 949685332324 + 71948942289 = 974518^2 + 268233^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021634274613 - 2¹ = 1021634274611 is a prime.

Together with 1021634274611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021634274611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510817137306 + 510817137307.

It is an arithmetic number, because the mean of its divisors is an integer number (510817137307).

Almost surely, 2^{1021634274613} is an apocalyptic number.

It is an amenable number.

1021634274613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021634274613 is an equidigital number, since it uses as much as digits as its factorization.

1021634274613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 1021634274613 in words is "one trillion, twenty-one billion, six hundred thirty-four million, two hundred seventy-four thousand, six hundred thirteen".