216573035385 has 48 divisors (see below), whose sum is σ = 407246749056. Its totient is φ = 97984115712.

The previous prime is 216573035353. The next prime is 216573035429. The reversal of 216573035385 is 583530375612.

It is not a de Polignac number, because 216573035385 - 2⁵ = 216573035353 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1447557 + ... + 1590146.

It is an arithmetic number, because the mean of its divisors is an integer number (8484307272).

Almost surely, 2^216573035385 is an apocalyptic number.

It is an amenable number.

216573035385 is a deficient number, since it is larger than the sum of its proper divisors (190673713671).

216573035385 is a wasteful number, since it uses less digits than its factorization.

216573035385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037822 (or 3037815 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 48.

The spelling of 216573035385 in words is "two hundred sixteen billion, five hundred seventy-three million, thirty-five thousand, three hundred eighty-five".