216069994140 has 192 divisors, whose sum is σ = 812302525440. Its totient is φ = 41443983360.

The previous prime is 216069994139. The next prime is 216069994159. The reversal of 216069994140 is 41499960612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1738725 + ... + 1858844.

It is an arithmetic number, because the mean of its divisors is an integer number (4230742320).

Almost surely, 2^216069994140 is an apocalyptic number.

216069994140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216069994140 is an abundant number, since it is smaller than the sum of its proper divisors (596232531300).

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

216069994140 is a wasteful number, since it uses less digits than its factorization.

216069994140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597612 (or 3597610 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 216069994140 in words is "two hundred sixteen billion, sixty-nine million, nine hundred ninety-four thousand, one hundred forty".