2489991107161 has 4 divisors (see below), whose sum is σ = 2493360514000. Its totient is φ = 2486621700324.

The previous prime is 2489991107147. The next prime is 2489991107173. The reversal of 2489991107161 is 1617011999842.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2489991107161 - 2¹⁵ = 2489991074393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2489991107096 and 2489991107105.

It is not an unprimeable number, because it can be changed into a prime (2489991107141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684702311 + ... + 1684703788.

It is an arithmetic number, because the mean of its divisors is an integer number (623340128500).

Almost surely, 2^{2489991107161} is an apocalyptic number.

It is an amenable number.

2489991107161 is a deficient number, since it is larger than the sum of its proper divisors (3369406839).

2489991107161 is an equidigital number, since it uses as much as digits as its factorization.

2489991107161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369406838.

The product of its (nonzero) digits is 1959552, while the sum is 58.

The spelling of 2489991107161 in words is "two trillion, four hundred eighty-nine billion, nine hundred ninety-one million, one hundred seven thousand, one hundred sixty-one".