2449894881951 has 48 divisors (see below), whose sum is σ = 3922388366208. Its totient is φ = 1461007627200.

The previous prime is 2449894881947. The next prime is 2449894882031. The reversal of 2449894881951 is 1591884989442.

2449894881951 is a `hidden beast` number, since 2 + 4 + 4 + 9 + 89 + 488 + 19 + 51 = 666.

It is not a de Polignac number, because 2449894881951 - 2² = 2449894881947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2449894881951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2449894881451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5812521 + ... + 6219741.

It is an arithmetic number, because the mean of its divisors is an integer number (81716424296).

Almost surely, 2^{2449894881951} is an apocalyptic number.

2449894881951 is a deficient number, since it is larger than the sum of its proper divisors (1472493484257).

2449894881951 is a wasteful number, since it uses less digits than its factorization.

2449894881951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408212 (or 408209 counting only the distinct ones).

The product of its digits is 238878720, while the sum is 72.

The spelling of 2449894881951 in words is "two trillion, four hundred forty-nine billion, eight hundred ninety-four million, eight hundred eighty-one thousand, nine hundred fifty-one".