1022065021639 has 2 divisors, whose sum is σ = 1022065021640. Its totient is φ = 1022065021638.

The previous prime is 1022065021597. The next prime is 1022065021667. The reversal of 1022065021639 is 9361205602201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022065021639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022065021598 and 1022065021607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022065621639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511032510819 + 511032510820.

It is an arithmetic number, because the mean of its divisors is an integer number (511032510820).

Almost surely, 2^{1022065021639} is an apocalyptic number.

1022065021639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022065021639 is an equidigital number, since it uses as much as digits as its factorization.

1022065021639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 1022065021639 in words is "one trillion, twenty-two billion, sixty-five million, twenty-one thousand, six hundred thirty-nine".