1035216322561 has 4 divisors (see below), whose sum is σ = 1035219969792. Its totient is φ = 1035212675332.

The previous prime is 1035216322537. The next prime is 1035216322589. The reversal of 1035216322561 is 1652236125301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1035216322561 - 2¹¹ = 1035216320513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1035216322561.

It is not an unprimeable number, because it can be changed into a prime (1035216322531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1358281 + ... + 1978726.

It is an arithmetic number, because the mean of its divisors is an integer number (258804992448).

Almost surely, 2^{1035216322561} is an apocalyptic number.

It is an amenable number.

1035216322561 is a deficient number, since it is larger than the sum of its proper divisors (3647231).

1035216322561 is an equidigital number, since it uses as much as digits as its factorization.

1035216322561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647230.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 1035216322561 in words is "one trillion, thirty-five billion, two hundred sixteen million, three hundred twenty-two thousand, five hundred sixty-one".