2148911581439 has 8 divisors (see below), whose sum is σ = 2455908420768. Its totient is φ = 1841917109760.

The previous prime is 2148911581379. The next prime is 2148911581457. The reversal of 2148911581439 is 9341851198412.

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

It is a de Polignac number, because none of the positive numbers 2^k-2148911581439 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 (2148911581499) 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, 2285519 + ... + 3085679.

It is an arithmetic number, because the mean of its divisors is an integer number (306988552596).

Almost surely, 2^{2148911581439} is an apocalyptic number.

2148911581439 is a deficient number, since it is larger than the sum of its proper divisors (306996839329).

2148911581439 is an equidigital number, since it uses as much as digits as its factorization.

2148911581439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183825.

The product of its digits is 2488320, while the sum is 56.

The spelling of 2148911581439 in words is "two trillion, one hundred forty-eight billion, nine hundred eleven million, five hundred eighty-one thousand, four hundred thirty-nine".