11650465642553 has 4 divisors (see below), whose sum is σ = 11810061062388. Its totient is φ = 11490870222720.

The previous prime is 11650465642549. The next prime is 11650465642589. The reversal of 11650465642553 is 35524656405611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5778509245609 + 5871956396944 = 2403853^2 + 2423212^2 .

It is a cyclic number.

It is not a de Polignac number, because 11650465642553 - 2² = 11650465642549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11650465642495 and 11650465642504.

It is not an unprimeable number, because it can be changed into a prime (11650465642853) by changing a digit.

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, 79797709808 + ... + 79797709953.

It is an arithmetic number, because the mean of its divisors is an integer number (2952515265597).

Almost surely, 2^{11650465642553} is an apocalyptic number.

It is an amenable number.

11650465642553 is a deficient number, since it is larger than the sum of its proper divisors (159595419835).

11650465642553 is an equidigital number, since it uses as much as digits as its factorization.

11650465642553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159595419834.

The product of its (nonzero) digits is 12960000, while the sum is 53.

The spelling of 11650465642553 in words is "eleven trillion, six hundred fifty billion, four hundred sixty-five million, six hundred forty-two thousand, five hundred fifty-three".