212405322544 has 10 divisors (see below), whose sum is σ = 411535312460. Its totient is φ = 106202661264.

The previous prime is 212405322517. The next prime is 212405322581. The reversal of 212405322544 is 445223504212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6637666314 + ... + 6637666345.

It is an arithmetic number, because the mean of its divisors is an integer number (41153531246).

Almost surely, 2^212405322544 is an apocalyptic number.

It is an amenable number.

212405322544 is a deficient number, since it is larger than the sum of its proper divisors (199129989916).

212405322544 is a wasteful number, since it uses less digits than its factorization.

212405322544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13275332667 (or 13275332661 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 212405322544 its reverse (445223504212), we get a palindrome (657628826756).

The spelling of 212405322544 in words is "two hundred twelve billion, four hundred five million, three hundred twenty-two thousand, five hundred forty-four".