216308211532 has 48 divisors (see below), whose sum is σ = 443793306880. Its totient is φ = 90319344192.

The previous prime is 216308211499. The next prime is 216308211541. The reversal of 216308211532 is 235112803612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251719 + ... + 704257.

Almost surely, 2^216308211532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216308211532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221896653440).

216308211532 is an abundant number, since it is smaller than the sum of its proper divisors (227485095348).

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

216308211532 is a wasteful number, since it uses less digits than its factorization.

216308211532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452990 (or 452988 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 216308211532 in words is "two hundred sixteen billion, three hundred eight million, two hundred eleven thousand, five hundred thirty-two".