11656055201 has 4 divisors (see below), whose sum is σ = 13321205952. Its totient is φ = 9990904452.

The previous prime is 11656055179. The next prime is 11656055249. The reversal of 11656055201 is 10255065611.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10255065611 = 7 ⋅1465009373.

It is a cyclic number.

It is not a de Polignac number, because 11656055201 - 2¹⁸ = 11655793057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11656055261) 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, 832575365 + ... + 832575378.

It is an arithmetic number, because the mean of its divisors is an integer number (3330301488).

Almost surely, 2^11656055201 is an apocalyptic number.

It is an amenable number.

11656055201 is a deficient number, since it is larger than the sum of its proper divisors (1665150751).

11656055201 is an equidigital number, since it uses as much as digits as its factorization.

11656055201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665150750.

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 11656055201 in words is "eleven billion, six hundred fifty-six million, fifty-five thousand, two hundred one".