21115334554024 has 32 divisors (see below), whose sum is σ = 41315655680640. Its totient is φ = 10097894030400.

The previous prime is 21115334554019. The next prime is 21115334554037. The reversal of 21115334554024 is 42045543351112.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1721067 + ... + 6722554.

It is an arithmetic number, because the mean of its divisors is an integer number (1291114240020).

Almost surely, 2^{21115334554024} is an apocalyptic number.

It is an amenable number.

21115334554024 is a deficient number, since it is larger than the sum of its proper divisors (20200321126616).

21115334554024 is a wasteful number, since it uses less digits than its factorization.

21115334554024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8457241 (or 8457237 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 21115334554024 in words is "twenty-one trillion, one hundred fifteen billion, three hundred thirty-four million, five hundred fifty-four thousand, twenty-four".