2211664356451 has 4 divisors (see below), whose sum is σ = 2412724752504. Its totient is φ = 2010603960400.

The previous prime is 2211664356353. The next prime is 2211664356467. The reversal of 2211664356451 is 1546534661122.

2211664356451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2211664356451 - 2¹⁹ = 2211663832163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2211664306451) 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, 100530198010 + ... + 100530198031.

It is an arithmetic number, because the mean of its divisors is an integer number (603181188126).

Almost surely, 2^{2211664356451} is an apocalyptic number.

2211664356451 is a deficient number, since it is larger than the sum of its proper divisors (201060396053).

2211664356451 is a wasteful number, since it uses less digits than its factorization.

2211664356451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201060396052.

The product of its digits is 1036800, while the sum is 46.

The spelling of 2211664356451 in words is "two trillion, two hundred eleven billion, six hundred sixty-four million, three hundred fifty-six thousand, four hundred fifty-one".