2158644309293 has 8 divisors (see below), whose sum is σ = 2217129200640. Its totient is φ = 2100166952400.

The previous prime is 2158644309287. The next prime is 2158644309319. The reversal of 2158644309293 is 3929034468512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2158644309293 - 2²⁴ = 2158627532077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158644309893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1300433 + ... + 2451206.

It is an arithmetic number, because the mean of its divisors is an integer number (277141150080).

Almost surely, 2^{2158644309293} is an apocalyptic number.

It is an amenable number.

2158644309293 is a deficient number, since it is larger than the sum of its proper divisors (58484891347).

2158644309293 is a wasteful number, since it uses less digits than its factorization.

2158644309293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767227.

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 2158644309293 in words is "two trillion, one hundred fifty-eight billion, six hundred forty-four million, three hundred nine thousand, two hundred ninety-three".