2491154871111 has 12 divisors (see below), whose sum is σ = 3787720856920. Its totient is φ = 1573360971120.

The previous prime is 2491154871097. The next prime is 2491154871173. The reversal of 2491154871111 is 1111784511942.

2491154871111 is a `hidden beast` number, since 2 + 4 + 91 + 1 + 548 + 7 + 1 + 1 + 11 = 666.

It is not a de Polignac number, because 2491154871111 - 2⁷ = 2491154870983 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 (2491155871111) 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 11 ways as a sum of consecutive naturals, for example, 7284078400 + ... + 7284078741.

Almost surely, 2^{2491154871111} is an apocalyptic number.

2491154871111 is a deficient number, since it is larger than the sum of its proper divisors (1296565985809).

2491154871111 is a wasteful number, since it uses less digits than its factorization.

2491154871111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14568157166 (or 14568157163 counting only the distinct ones).

The product of its digits is 80640, while the sum is 45.

The spelling of 2491154871111 in words is "two trillion, four hundred ninety-one billion, one hundred fifty-four million, eight hundred seventy-one thousand, one hundred eleven".