2491374963888 has 60 divisors (see below), whose sum is σ = 7382530231128. Its totient is φ = 781607831040.

The previous prime is 2491374963887. The next prime is 2491374963893. The reversal of 2491374963888 is 8883694731942.

2491374963888 is a `hidden beast` number, since 2 + 4 + 91 + 3 + 74 + 96 + 388 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (2491374963887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 508856818 + ... + 508861713.

Almost surely, 2^{2491374963888} is an apocalyptic number.

It is an amenable number.

2491374963888 is an abundant number, since it is smaller than the sum of its proper divisors (4891155267240).

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

2491374963888 is a wasteful number, since it uses less digits than its factorization.

2491374963888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017718562 (or 1017718553 counting only the distinct ones).

The product of its digits is 501645312, while the sum is 72.

The spelling of 2491374963888 in words is "two trillion, four hundred ninety-one billion, three hundred seventy-four million, nine hundred sixty-three thousand, eight hundred eighty-eight".