216212146536 has 32 divisors (see below), whose sum is σ = 555139297440. Its totient is φ = 70122858048.

The previous prime is 216212146519. The next prime is 216212146541. The reversal of 216212146536 is 635641212612.

It is a junction number, because it is equal to n+sod(n) for n = 216212146494 and 216212146503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121740186 + ... + 121741961.

It is an arithmetic number, because the mean of its divisors is an integer number (17348103045).

Almost surely, 2^216212146536 is an apocalyptic number.

It is an amenable number.

216212146536 is an abundant number, since it is smaller than the sum of its proper divisors (338927150904).

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

216212146536 is a wasteful number, since it uses less digits than its factorization.

216212146536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243482193 (or 243482189 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The spelling of 216212146536 in words is "two hundred sixteen billion, two hundred twelve million, one hundred forty-six thousand, five hundred thirty-six".