21116270624 has 48 divisors (see below), whose sum is σ = 41927880960. Its totient is φ = 10468128000.

The previous prime is 21116270603. The next prime is 21116270641. The reversal of 21116270624 is 42607261112.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3835874 + ... + 3841374.

It is an arithmetic number, because the mean of its divisors is an integer number (873497520).

Almost surely, 2^21116270624 is an apocalyptic number.

It is an amenable number.

21116270624 is a deficient number, since it is larger than the sum of its proper divisors (20811610336).

21116270624 is a wasteful number, since it uses less digits than its factorization.

21116270624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6513 (or 6505 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 21116270624 in words is "twenty-one billion, one hundred sixteen million, two hundred seventy thousand, six hundred twenty-four".