11552471761 has 4 divisors (see below), whose sum is σ = 11607223024. Its totient is φ = 11497720500.

The previous prime is 11552471747. The next prime is 11552471767. The reversal of 11552471761 is 16717425511.

It is a happy number.

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 11552471761 - 2⁵ = 11552471729 is a prime.

It is a super-2 number, since 2×11552471761² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11552471767) 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, 27375315 + ... + 27375736.

It is an arithmetic number, because the mean of its divisors is an integer number (2901805756).

Almost surely, 2^11552471761 is an apocalyptic number.

It is an amenable number.

11552471761 is a deficient number, since it is larger than the sum of its proper divisors (54751263).

11552471761 is an equidigital number, since it uses as much as digits as its factorization.

11552471761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54751262.

The product of its digits is 58800, while the sum is 40.

The spelling of 11552471761 in words is "eleven billion, five hundred fifty-two million, four hundred seventy-one thousand, seven hundred sixty-one".