212345356544 has 36 divisors (see below), whose sum is σ = 426057510396. Its totient is φ = 105622536192.

The previous prime is 212345356537. The next prime is 212345356547. The reversal of 212345356544 is 445653543212.

It can be written as a sum of positive squares in 2 ways, for example, as 126941138944 + 85404217600 = 356288^2 + 292240^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212345356495 and 212345356504.

It is not an unprimeable number, because it can be changed into a prime (212345356547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2099489 + ... + 2198304.

Almost surely, 2^212345356544 is an apocalyptic number.

It is an amenable number.

212345356544 is an abundant number, since it is smaller than the sum of its proper divisors (213712153852).

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

212345356544 is an equidigital number, since it uses as much as digits as its factorization.

212345356544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4298002 (or 4297988 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 44.

Adding to 212345356544 its reverse (445653543212), we get a palindrome (657998899756).

The spelling of 212345356544 in words is "two hundred twelve billion, three hundred forty-five million, three hundred fifty-six thousand, five hundred forty-four".