2491729516172 has 24 divisors (see below), whose sum is σ = 4699097239536. Its totient is φ = 1149258691008.

The previous prime is 2491729516141. The next prime is 2491729516189. The reversal of 2491729516172 is 2716159271942.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15969878 + ... + 16125149.

It is an arithmetic number, because the mean of its divisors is an integer number (195795718314).

Almost surely, 2^{2491729516172} is an apocalyptic number.

It is an amenable number.

2491729516172 is a deficient number, since it is larger than the sum of its proper divisors (2207367723364).

2491729516172 is a wasteful number, since it uses less digits than its factorization.

2491729516172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32096537 (or 32096535 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 56.

The spelling of 2491729516172 in words is "two trillion, four hundred ninety-one billion, seven hundred twenty-nine million, five hundred sixteen thousand, one hundred seventy-two".