216343843976 has 32 divisors (see below), whose sum is σ = 459840158400. Its totient is φ = 94595688000.

The previous prime is 216343843931. The next prime is 216343843981. The reversal of 216343843976 is 679348343612.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

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, 54740900 + ... + 54744851.

It is an arithmetic number, because the mean of its divisors is an integer number (14370004950).

Almost surely, 2^216343843976 is an apocalyptic number.

216343843976 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

216343843976 is an abundant number, since it is smaller than the sum of its proper divisors (243496314424).

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

216343843976 is a wasteful number, since it uses less digits than its factorization.

216343843976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109485789 (or 109485785 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 56.

The spelling of 216343843976 in words is "two hundred sixteen billion, three hundred forty-three million, eight hundred forty-three thousand, nine hundred seventy-six".