216275246520 has 64 divisors (see below), whose sum is σ = 648858193920. Its totient is φ = 57670514304.

The previous prime is 216275246513. The next prime is 216275246569. The reversal of 216275246520 is 25642572612.

It is a super-2 number, since 2×216275246520² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 3561129 + ... + 3621351.

It is an arithmetic number, because the mean of its divisors is an integer number (10138409280).

Almost surely, 2^216275246520 is an apocalyptic number.

216275246520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216275246520 is an abundant number, since it is smaller than the sum of its proper divisors (432582947400).

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

216275246520 is a wasteful number, since it uses less digits than its factorization.

216275246520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90164 (or 90160 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 216275246520 in words is "two hundred sixteen billion, two hundred seventy-five million, two hundred forty-six thousand, five hundred twenty".