216151510660 has 12 divisors (see below), whose sum is σ = 453918172428. Its totient is φ = 86460604256.

The previous prime is 216151510577. The next prime is 216151510691. The reversal of 216151510660 is 66015151612.

It can be written as a sum of positive squares in 2 ways, for example, as 124153341316 + 91998169344 = 352354^2 + 303312^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5403787747 + ... + 5403787786.

It is an arithmetic number, because the mean of its divisors is an integer number (37826514369).

Almost surely, 2^216151510660 is an apocalyptic number.

216151510660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216151510660 is an abundant number, since it is smaller than the sum of its proper divisors (237766661768).

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

216151510660 is a wasteful number, since it uses less digits than its factorization.

216151510660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10807575542 (or 10807575540 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 216151510660 in words is "two hundred sixteen billion, one hundred fifty-one million, five hundred ten thousand, six hundred sixty".