1165561650535 has 8 divisors (see below), whose sum is σ = 1398845414736. Its totient is φ = 932335031040.

The previous prime is 1165561650521. The next prime is 1165561650553. The reversal of 1165561650535 is 5350561655611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1165561650535 - 2⁵ = 1165561650503 is a prime.

It is a super-2 number, since 2×1165561650535² (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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14241289 + ... + 14322898.

It is an arithmetic number, because the mean of its divisors is an integer number (174855676842).

Almost surely, 2^{1165561650535} is an apocalyptic number.

1165561650535 is a deficient number, since it is larger than the sum of its proper divisors (233283764201).

1165561650535 is an equidigital number, since it uses as much as digits as its factorization.

1165561650535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28572353.

The product of its (nonzero) digits is 2025000, while the sum is 49.

The spelling of 1165561650535 in words is "one trillion, one hundred sixty-five billion, five hundred sixty-one million, six hundred fifty thousand, five hundred thirty-five".