2145281998719 has 8 divisors (see below), whose sum is σ = 2860424355712. Its totient is φ = 1430163820440.

The previous prime is 2145281998697. The next prime is 2145281998723. The reversal of 2145281998719 is 9178991825412.

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

It is not a de Polignac number, because 2145281998719 - 2⁸ = 2145281998463 is a prime.

It is a super-2 number, since 2×2145281998719² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2145281998719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145281998789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5836627 + ... + 6193284.

It is an arithmetic number, because the mean of its divisors is an integer number (357553044464).

Almost surely, 2^{2145281998719} is an apocalyptic number.

2145281998719 is a deficient number, since it is larger than the sum of its proper divisors (715142356993).

2145281998719 is a wasteful number, since it uses less digits than its factorization.

2145281998719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12089357.

The product of its digits is 26127360, while the sum is 66.

The spelling of 2145281998719 in words is "two trillion, one hundred forty-five billion, two hundred eighty-one million, nine hundred ninety-eight thousand, seven hundred nineteen".