11445523053661 has 4 divisors (see below), whose sum is σ = 11451248680000. Its totient is φ = 11439797427324.

The previous prime is 11445523053649. The next prime is 11445523053689. The reversal of 11445523053661 is 16635032554411.

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 11445523053661 - 2¹³ = 11445523045469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11445523053161) 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, 2862810171 + ... + 2862814168.

It is an arithmetic number, because the mean of its divisors is an integer number (2862812170000).

Almost surely, 2^{11445523053661} is an apocalyptic number.

It is an amenable number.

11445523053661 is a deficient number, since it is larger than the sum of its proper divisors (5725626339).

11445523053661 is an equidigital number, since it uses as much as digits as its factorization.

11445523053661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5725626338.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 11445523053661 in words is "eleven trillion, four hundred forty-five billion, five hundred twenty-three million, fifty-three thousand, six hundred sixty-one".