16652215673521 has 8 divisors (see below), whose sum is σ = 17253974669760. Its totient is φ = 16061107279152.

The previous prime is 16652215673453. The next prime is 16652215673537. The reversal of 16652215673521 is 12537651225661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16652215673521 - 2⁷ = 16652215673393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16652215673581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2662647285 + ... + 2662653538.

It is an arithmetic number, because the mean of its divisors is an integer number (2156746833720).

Almost surely, 2^{16652215673521} is an apocalyptic number.

It is an amenable number.

16652215673521 is a deficient number, since it is larger than the sum of its proper divisors (601758996239).

16652215673521 is an equidigital number, since it uses as much as digits as its factorization.

16652215673521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325300935.

The product of its digits is 4536000, while the sum is 52.

The spelling of 16652215673521 in words is "sixteen trillion, six hundred fifty-two billion, two hundred fifteen million, six hundred seventy-three thousand, five hundred twenty-one".