216009287370 has 24 divisors (see below), whose sum is σ = 561624147396. Its totient is φ = 57602476608.

The previous prime is 216009287363. The next prime is 216009287387. The reversal of 216009287370 is 73782900612.

216009287370 is a `hidden beast` number, since 2 + 1 + 600 + 9 + 2 + 8 + 7 + 37 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 214168105089 + 1841182281 = 462783^2 + 42909^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1200051507 + ... + 1200051686.

Almost surely, 2^216009287370 is an apocalyptic number.

216009287370 is an abundant number, since it is smaller than the sum of its proper divisors (345614860026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216009287370 is a wasteful number, since it uses less digits than its factorization.

216009287370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400103206 (or 2400103203 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 216009287370 in words is "two hundred sixteen billion, nine million, two hundred eighty-seven thousand, three hundred seventy".