216138000528 has 30 divisors (see below), whose sum is σ = 604886210214. Its totient is φ = 72046000128.

The previous prime is 216138000511. The next prime is 216138000539. The reversal of 216138000528 is 825000831612.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 167258096784 + 48879903744 = 408972^2 + 221088^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 216138000492 and 216138000501.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 750479025 + ... + 750479312.

Almost surely, 2^216138000528 is an apocalyptic number.

It is an amenable number.

216138000528 is an abundant number, since it is smaller than the sum of its proper divisors (388748209686).

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

216138000528 is a wasteful number, since it uses less digits than its factorization.

216138000528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500958351 (or 1500958342 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 216138000528 in words is "two hundred sixteen billion, one hundred thirty-eight million, five hundred twenty-eight", and thus it is an aban number.