2158993580489 has 16 divisors (see below), whose sum is σ = 2171269083648. Its totient is φ = 2146756182912.

The previous prime is 2158993580437. The next prime is 2158993580503. The reversal of 2158993580489 is 9840853998512.

It is a cyclic number.

It is not a de Polignac number, because 2158993580489 - 2²⁸ = 2158725145033 is a prime.

It is a super-2 number, since 2×2158993580489² (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 (2158993580089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422749274 + ... + 422754380.

It is an arithmetic number, because the mean of its divisors is an integer number (135704317728).

Almost surely, 2^{2158993580489} is an apocalyptic number.

It is an amenable number.

2158993580489 is a deficient number, since it is larger than the sum of its proper divisors (12275503159).

2158993580489 is a wasteful number, since it uses less digits than its factorization.

2158993580489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8384.

The product of its (nonzero) digits is 223948800, while the sum is 71.

The spelling of 2158993580489 in words is "two trillion, one hundred fifty-eight billion, nine hundred ninety-three million, five hundred eighty thousand, four hundred eighty-nine".