2154682867488 has 48 divisors (see below), whose sum is σ = 5656184795520. Its totient is φ = 718209556736.

The previous prime is 2154682867487. The next prime is 2154682867541. The reversal of 2154682867488 is 8847682864512.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (2154682867487) 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 7 ways as a sum of consecutive naturals, for example, 3870793 + ... + 4392311.

It is an arithmetic number, because the mean of its divisors is an integer number (117837183240).

Almost surely, 2^{2154682867488} is an apocalyptic number.

It is an amenable number.

2154682867488 is an abundant number, since it is smaller than the sum of its proper divisors (3501501928032).

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

2154682867488 is a wasteful number, since it uses less digits than its factorization.

2154682867488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564569 (or 564561 counting only the distinct ones).

The product of its digits is 330301440, while the sum is 69.

The spelling of 2154682867488 in words is "two trillion, one hundred fifty-four billion, six hundred eighty-two million, eight hundred sixty-seven thousand, four hundred eighty-eight".