216720603357 has 8 divisors (see below), whose sum is σ = 293273652576. Its totient is φ = 142323978192.

The previous prime is 216720603347. The next prime is 216720603361. The reversal of 216720603357 is 753306027612.

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

It is not a de Polignac number, because 216720603357 - 2¹² = 216720599261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216720603347) by changing a digit.

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, 539105778 + ... + 539106179.

It is an arithmetic number, because the mean of its divisors is an integer number (36659206572).

Almost surely, 2^216720603357 is an apocalyptic number.

It is an amenable number.

216720603357 is a deficient number, since it is larger than the sum of its proper divisors (76553049219).

216720603357 is a wasteful number, since it uses less digits than its factorization.

216720603357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078212027.

The product of its (nonzero) digits is 317520, while the sum is 42.

The spelling of 216720603357 in words is "two hundred sixteen billion, seven hundred twenty million, six hundred three thousand, three hundred fifty-seven".