2158622234291 has 4 divisors (see below), whose sum is σ = 2159955541800. Its totient is φ = 2157288926784.

The previous prime is 2158622234243. The next prime is 2158622234371. The reversal of 2158622234291 is 1924322268512.

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 2158622234291 - 2⁶ = 2158622234227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2158622234591) 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, 666651326 + ... + 666654563.

It is an arithmetic number, because the mean of its divisors is an integer number (539988885450).

Almost surely, 2^{2158622234291} is an apocalyptic number.

2158622234291 is a deficient number, since it is larger than the sum of its proper divisors (1333307509).

2158622234291 is a wasteful number, since it uses less digits than its factorization.

2158622234291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333307508.

The product of its digits is 829440, while the sum is 47.

The spelling of 2158622234291 in words is "two trillion, one hundred fifty-eight billion, six hundred twenty-two million, two hundred thirty-four thousand, two hundred ninety-one".