11220616551 has 8 divisors (see below), whose sum is σ = 14963768560. Its totient is φ = 7478937792.

The previous prime is 11220616543. The next prime is 11220616571. The reversal of 11220616551 is 15561602211.

11220616551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11220616551 - 2³ = 11220616543 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 (11220616531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350416 + ... + 381093.

It is an arithmetic number, because the mean of its divisors is an integer number (1870471070).

Almost surely, 2^11220616551 is an apocalyptic number.

11220616551 is a deficient number, since it is larger than the sum of its proper divisors (3743152009).

11220616551 is an equidigital number, since it uses as much as digits as its factorization.

11220616551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736625.

The product of its (nonzero) digits is 3600, while the sum is 30.

The spelling of 11220616551 in words is "eleven billion, two hundred twenty million, six hundred sixteen thousand, five hundred fifty-one".