216527251000 has 64 divisors (see below), whose sum is σ = 506915866080. Its totient is φ = 86569516800.

The previous prime is 216527250977. The next prime is 216527251021. The reversal of 216527251000 is 152725612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2086339 + ... + 2187661.

Almost surely, 2^216527251000 is an apocalyptic number.

216527251000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216527251000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253457933040).

216527251000 is an abundant number, since it is smaller than the sum of its proper divisors (290388615080).

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

216527251000 is a wasteful number, since it uses less digits than its factorization.

216527251000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103481 (or 103467 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

Adding to 216527251000 its reverse (152725612), we get a palindrome (216679976612).

The spelling of 216527251000 in words is "two hundred sixteen billion, five hundred twenty-seven million, two hundred fifty-one thousand".