11551411061 has 4 divisors (see below), whose sum is σ = 11627910624. Its totient is φ = 11474911500.

The previous prime is 11551411037. The next prime is 11551411087. The reversal of 11551411061 is 16011415511.

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 11551411061 - 2²² = 11547216757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11551411061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551411021) 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, 38249555 + ... + 38249856.

It is an arithmetic number, because the mean of its divisors is an integer number (2906977656).

Almost surely, 2^11551411061 is an apocalyptic number.

It is an amenable number.

11551411061 is a deficient number, since it is larger than the sum of its proper divisors (76499563).

11551411061 is an equidigital number, since it uses as much as digits as its factorization.

11551411061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76499562.

The product of its (nonzero) digits is 600, while the sum is 26.

Adding to 11551411061 its reverse (16011415511), we get a palindrome (27562826572).

The spelling of 11551411061 in words is "eleven billion, five hundred fifty-one million, four hundred eleven thousand, sixty-one".