1052261235665 has 16 divisors (see below), whose sum is σ = 1337023383120. Its totient is φ = 792271472640.

The previous prime is 1052261235617. The next prime is 1052261235703. The reversal of 1052261235665 is 5665321622501.

It can be written as a sum of positive squares in 8 ways, for example, as 5478516289 + 1046782719376 = 74017^2 + 1023124^2 .

It is not a de Polignac number, because 1052261235665 - 2⁶ = 1052261235601 is a prime.

It is a super-2 number, since 2×1052261235665² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4027205 + ... + 4280525.

It is an arithmetic number, because the mean of its divisors is an integer number (83563961445).

Almost surely, 2^{1052261235665} is an apocalyptic number.

It is an amenable number.

1052261235665 is a deficient number, since it is larger than the sum of its proper divisors (284762147455).

1052261235665 is a wasteful number, since it uses less digits than its factorization.

1052261235665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302212.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 1052261235665 in words is "one trillion, fifty-two billion, two hundred sixty-one million, two hundred thirty-five thousand, six hundred sixty-five".