2215143665051 has 4 divisors (see below), whose sum is σ = 2215155777912. Its totient is φ = 2215131552192.

The previous prime is 2215143665039. The next prime is 2215143665057. The reversal of 2215143665051 is 1505663415122.

2215143665051 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 a de Polignac number, because none of the positive numbers 2^k-2215143665051 is a prime.

It is a super-2 number, since 2×2215143665051² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2215143665057) 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, 5777846 + ... + 6149291.

It is an arithmetic number, because the mean of its divisors is an integer number (553788944478).

Almost surely, 2^{2215143665051} is an apocalyptic number.

2215143665051 is a deficient number, since it is larger than the sum of its proper divisors (12112861).

2215143665051 is a wasteful number, since it uses less digits than its factorization.

2215143665051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12112860.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 2215143665051 in words is "two trillion, two hundred fifteen billion, one hundred forty-three million, six hundred sixty-five thousand, fifty-one".