11655673321 has 4 divisors (see below), whose sum is σ = 11665097092. Its totient is φ = 11646249552.

The previous prime is 11655673319. The next prime is 11655673327. The reversal of 11655673321 is 12337655611.

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 10289262096 + 1366411225 = 101436^2 + 36965^2 .

It is a cyclic number.

It is not a de Polignac number, because 11655673321 - 2¹ = 11655673319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11655673327) 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, 4710030 + ... + 4712503.

It is an arithmetic number, because the mean of its divisors is an integer number (2916274273).

Almost surely, 2^11655673321 is an apocalyptic number.

It is an amenable number.

11655673321 is a deficient number, since it is larger than the sum of its proper divisors (9423771).

11655673321 is an equidigital number, since it uses as much as digits as its factorization.

11655673321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9423770.

The product of its digits is 113400, while the sum is 40.

The spelling of 11655673321 in words is "eleven billion, six hundred fifty-five million, six hundred seventy-three thousand, three hundred twenty-one".