2687481997632 has 84 divisors (see below), whose sum is σ = 8108612566080. Its totient is φ = 848678522112.

The previous prime is 2687481997589. The next prime is 2687481997639. The reversal of 2687481997632 is 2367991847862.

2687481997632 is a `hidden beast` number, since 2 + 6 + 87 + 481 + 9 + 9 + 7 + 63 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687481997639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122772408 + ... + 122794295.

Almost surely, 2^{2687481997632} is an apocalyptic number.

It is an amenable number.

2687481997632 is an abundant number, since it is smaller than the sum of its proper divisors (5421130568448).

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

2687481997632 is a wasteful number, since it uses less digits than its factorization.

2687481997632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245566740 (or 245566727 counting only the distinct ones).

The product of its digits is 438939648, while the sum is 72.

The spelling of 2687481997632 in words is "two trillion, six hundred eighty-seven billion, four hundred eighty-one million, nine hundred ninety-seven thousand, six hundred thirty-two".