226455551421561 has 64 divisors (see below), whose sum is σ = 426164821309440. Its totient is φ = 115419638992320.

The previous prime is 226455551421529. The next prime is 226455551421581. The reversal of 226455551421561 is 165124155554622.

226455551421561 is a `hidden beast` number, since 2 + 2 + 6 + 4 + 5 + 5 + 5 + 51 + 4 + 21 + 561 = 666.

It is not a de Polignac number, because 226455551421561 - 2⁵ = 226455551421529 is a prime.

It is a super-3 number, since 3×226455551421561³ (a number of 44 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 226455551421498 and 226455551421507.

It is not an unprimeable number, because it can be changed into a prime (226455551421581) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1027486315 + ... + 1027706688.

It is an arithmetic number, because the mean of its divisors is an integer number (6658825332960).

Almost surely, 2^{226455551421561} is an apocalyptic number.

226455551421561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

226455551421561 is a deficient number, since it is larger than the sum of its proper divisors (199709269887879).

226455551421561 is a wasteful number, since it uses less digits than its factorization.

226455551421561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055193083 (or 2055193077 counting only the distinct ones).

The product of its digits is 14400000, while the sum is 54.

The spelling of 226455551421561 in words is "two hundred twenty-six trillion, four hundred fifty-five billion, five hundred fifty-one million, four hundred twenty-one thousand, five hundred sixty-one".