2491637988441 has 16 divisors (see below), whose sum is σ = 3800242790784. Its totient is φ = 1422495225984.

The previous prime is 2491637988409. The next prime is 2491637988491. The reversal of 2491637988441 is 1448897361942.

It is not a de Polignac number, because 2491637988441 - 2⁵ = 2491637988409 is a prime.

It is a super-2 number, since 2×2491637988441² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2491637988491) 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 15 ways as a sum of consecutive naturals, for example, 54056010 + ... + 54102083.

It is an arithmetic number, because the mean of its divisors is an integer number (237515174424).

Almost surely, 2^{2491637988441} is an apocalyptic number.

2491637988441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2491637988441 is a deficient number, since it is larger than the sum of its proper divisors (1308604802343).

2491637988441 is a wasteful number, since it uses less digits than its factorization.

2491637988441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108159200.

The product of its digits is 83607552, while the sum is 66.

The spelling of 2491637988441 in words is "two trillion, four hundred ninety-one billion, six hundred thirty-seven million, nine hundred eighty-eight thousand, four hundred forty-one".