2491863353584 has 80 divisors (see below), whose sum is σ = 5413169963520. Its totient is φ = 1101635758080.

The previous prime is 2491863353563. The next prime is 2491863353671. The reversal of 2491863353584 is 4853533681942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405889 + ... + 2269024.

It is an arithmetic number, because the mean of its divisors is an integer number (67664624544).

Almost surely, 2^{2491863353584} is an apocalyptic number.

It is an amenable number.

2491863353584 is an abundant number, since it is smaller than the sum of its proper divisors (2921306609936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2491863353584 is a wasteful number, since it uses less digits than its factorization.

2491863353584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675078 (or 2675072 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 61.

The spelling of 2491863353584 in words is "two trillion, four hundred ninety-one billion, eight hundred sixty-three million, three hundred fifty-three thousand, five hundred eighty-four".