212364045137 has 4 divisors (see below), whose sum is σ = 217543656036. Its totient is φ = 207184434240.

The previous prime is 212364045121. The next prime is 212364045149. The reversal of 212364045137 is 731540463212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68904150016 + 143459895121 = 262496^2 + 378761^2 .

It is a cyclic number.

It is not a de Polignac number, because 212364045137 - 2⁴ = 212364045121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212364045137.

It is not an unprimeable number, because it can be changed into a prime (212364045107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2589805388 + ... + 2589805469.

It is an arithmetic number, because the mean of its divisors is an integer number (54385914009).

Almost surely, 2^212364045137 is an apocalyptic number.

It is an amenable number.

212364045137 is a deficient number, since it is larger than the sum of its proper divisors (5179610899).

212364045137 is an equidigital number, since it uses as much as digits as its factorization.

212364045137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179610898.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 212364045137 in words is "two hundred twelve billion, three hundred sixty-four million, forty-five thousand, one hundred thirty-seven".