21054880632188 has 24 divisors (see below), whose sum is σ = 40031505529008. Its totient is φ = 9631640422656.

The previous prime is 21054880632179. The next prime is 21054880632209. The reversal of 21054880632188 is 88123608845012.

It is a congruent number.

It is an unprimeable number.

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, 1791593906 + ... + 1791605657.

It is an arithmetic number, because the mean of its divisors is an integer number (1667979397042).

Almost surely, 2^{21054880632188} is an apocalyptic number.

It is an amenable number.

21054880632188 is a deficient number, since it is larger than the sum of its proper divisors (18976624896820).

21054880632188 is a wasteful number, since it uses less digits than its factorization.

21054880632188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3583199693 (or 3583199691 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 56.

The spelling of 21054880632188 in words is "twenty-one trillion, fifty-four billion, eight hundred eighty million, six hundred thirty-two thousand, one hundred eighty-eight".