2154868684512 has 96 divisors (see below), whose sum is σ = 5809905368064. Its totient is φ = 698816678400.

The previous prime is 2154868684459. The next prime is 2154868684517.

It is a happy number.

2154868684512 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154868684517) 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 15 ways as a sum of consecutive naturals, for example, 63602937 + ... + 63636807.

It is an arithmetic number, because the mean of its divisors is an integer number (60519847584).

Almost surely, 2^{2154868684512} is an apocalyptic number.

It is an amenable number.

2154868684512 is an abundant number, since it is smaller than the sum of its proper divisors (3655036683552).

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

2154868684512 is a wasteful number, since it uses less digits than its factorization.

2154868684512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51832 (or 51824 counting only the distinct ones).

The product of its digits is 29491200, while the sum is 60.

The spelling of 2154868684512 in words is "two trillion, one hundred fifty-four billion, eight hundred sixty-eight million, six hundred eighty-four thousand, five hundred twelve".