216985180510 has 24 divisors (see below), whose sum is σ = 454340399400. Its totient is φ = 74394918864.

The previous prime is 216985180507. The next prime is 216985180537. The reversal of 216985180510 is 15081589612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221412960 + ... + 221413939.

It is an arithmetic number, because the mean of its divisors is an integer number (18930849975).

Almost surely, 2^216985180510 is an apocalyptic number.

216985180510 is an abundant number, since it is smaller than the sum of its proper divisors (237355218890).

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

216985180510 is a wasteful number, since it uses less digits than its factorization.

216985180510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442826920 (or 442826913 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 46.

The spelling of 216985180510 in words is "two hundred sixteen billion, nine hundred eighty-five million, one hundred eighty thousand, five hundred ten".