11553573671 has 4 divisors (see below), whose sum is σ = 11565025200. Its totient is φ = 11542122144.

The previous prime is 11553573659. The next prime is 11553573673. The reversal of 11553573671 is 17637535511.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11553573671 - 2⁶ = 11553573607 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 (11553573673) 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, 5724251 + ... + 5726268.

It is an arithmetic number, because the mean of its divisors is an integer number (2891256300).

Almost surely, 2^11553573671 is an apocalyptic number.

11553573671 is a deficient number, since it is larger than the sum of its proper divisors (11451529).

11553573671 is a wasteful number, since it uses less digits than its factorization.

11553573671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11451528.

The product of its digits is 330750, while the sum is 44.

The spelling of 11553573671 in words is "eleven billion, five hundred fifty-three million, five hundred seventy-three thousand, six hundred seventy-one".