212817820534 has 32 divisors (see below), whose sum is σ = 352255018752. Its totient is φ = 95625180000.

The previous prime is 212817820529. The next prime is 212817820609. The reversal of 212817820534 is 435028718212.

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, 1326189 + ... + 1477975.

It is an arithmetic number, because the mean of its divisors is an integer number (11007969336).

Almost surely, 2^212817820534 is an apocalyptic number.

212817820534 is a deficient number, since it is larger than the sum of its proper divisors (139437198218).

212817820534 is a wasteful number, since it uses less digits than its factorization.

212817820534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152532.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 212817820534 in words is "two hundred twelve billion, eight hundred seventeen million, eight hundred twenty thousand, five hundred thirty-four".