55451220011 has 16 divisors (see below), whose sum is σ = 60927724800. Its totient is φ = 50047626720.

The previous prime is 55451219987. The next prime is 55451220017. The reversal of 55451220011 is 11002215455.

55451220011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55451220011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55451220017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3964316 + ... + 3978278.

It is an arithmetic number, because the mean of its divisors is an integer number (3807982800).

Almost surely, 2^55451220011 is an apocalyptic number.

55451220011 is a deficient number, since it is larger than the sum of its proper divisors (5476504789).

55451220011 is a wasteful number, since it uses less digits than its factorization.

55451220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16546.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 55451220011 its reverse (11002215455), we get a palindrome (66453435466).

The spelling of 55451220011 in words is "fifty-five billion, four hundred fifty-one million, two hundred twenty thousand, eleven".