2449948999681 has 8 divisors (see below), whose sum is σ = 2534574700800. Its totient is φ = 2365332945360.

The previous prime is 2449948999571. The next prime is 2449948999711. The reversal of 2449948999681 is 1869998499442.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2449948999681 is a prime.

It is a super-2 number, since 2×2449948999681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2449948999595 and 2449948999604.

It is not an unprimeable number, because it can be changed into a prime (2449948994681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1893105 + ... + 2912686.

It is an arithmetic number, because the mean of its divisors is an integer number (316821837600).

Almost surely, 2^{2449948999681} is an apocalyptic number.

It is an amenable number.

2449948999681 is a deficient number, since it is larger than the sum of its proper divisors (84625701119).

2449948999681 is a wasteful number, since it uses less digits than its factorization.

2449948999681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823399.

The product of its digits is 2902376448, while the sum is 82.

The spelling of 2449948999681 in words is "two trillion, four hundred forty-nine billion, nine hundred forty-eight million, nine hundred ninety-nine thousand, six hundred eighty-one".