2115091041473 has 4 divisors (see below), whose sum is σ = 2154998419668. Its totient is φ = 2075183663280.

The previous prime is 2115091041467. The next prime is 2115091041521. The reversal of 2115091041473 is 3741401905112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1793049546304 + 322041495169 = 1339048^2 + 567487^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115091041473 - 2³⁰ = 2114017299649 is a prime.

It is a super-2 number, since 2×2115091041473² (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 (2115091041443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19953689018 + ... + 19953689123.

It is an arithmetic number, because the mean of its divisors is an integer number (538749604917).

Almost surely, 2^{2115091041473} is an apocalyptic number.

It is an amenable number.

2115091041473 is a deficient number, since it is larger than the sum of its proper divisors (39907378195).

2115091041473 is an equidigital number, since it uses as much as digits as its factorization.

2115091041473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39907378194.

The product of its (nonzero) digits is 30240, while the sum is 38.

Adding to 2115091041473 its reverse (3741401905112), we get a palindrome (5856492946585).

The spelling of 2115091041473 in words is "two trillion, one hundred fifteen billion, ninety-one million, forty-one thousand, four hundred seventy-three".