1020755165765 has 4 divisors (see below), whose sum is σ = 1224906198924. Its totient is φ = 816604132608.

The previous prime is 1020755165753. The next prime is 1020755165777. The reversal of 1020755165765 is 5675615570201.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1020755165753) and next prime (1020755165777).

It can be written as a sum of positive squares in 2 ways, for example, as 359901606724 + 660853559041 = 599918^2 + 812929^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020755165765 - 2¹⁸ = 1020754903621 is a prime.

It is a super-2 number, since 2×1020755165765² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 102075516572 + ... + 102075516581.

It is an arithmetic number, because the mean of its divisors is an integer number (306226549731).

Almost surely, 2^{1020755165765} is an apocalyptic number.

It is an amenable number.

1020755165765 is a deficient number, since it is larger than the sum of its proper divisors (204151033159).

1020755165765 is an equidigital number, since it uses as much as digits as its factorization.

1020755165765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204151033158.

The product of its (nonzero) digits is 2205000, while the sum is 50.

The spelling of 1020755165765 in words is "one trillion, twenty billion, seven hundred fifty-five million, one hundred sixty-five thousand, seven hundred sixty-five".