21153244036616 has 64 divisors (see below), whose sum is σ = 40294015030080. Its totient is φ = 10408490864640.

The previous prime is 21153244036531. The next prime is 21153244036643. The reversal of 21153244036616 is 61663044235112.

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 15 ways as a sum of consecutive naturals, for example, 3329643296 + ... + 3329649648.

It is an arithmetic number, because the mean of its divisors is an integer number (629593984845).

Almost surely, 2^{21153244036616} is an apocalyptic number.

It is an amenable number.

21153244036616 is a deficient number, since it is larger than the sum of its proper divisors (19140770993464).

21153244036616 is a wasteful number, since it uses less digits than its factorization.

21153244036616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11574 (or 11570 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 21153244036616 in words is "twenty-one trillion, one hundred fifty-three billion, two hundred forty-four million, thirty-six thousand, six hundred sixteen".