212537144086457 has 4 divisors (see below), whose sum is σ = 212579711114100. Its totient is φ = 212494577058816.

The previous prime is 212537144086411. The next prime is 212537144086459. The reversal of 212537144086457 is 754680441735212.

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 137706962689321 + 74830181397136 = 11734861^2 + 8650444^2 .

It is a cyclic number.

It is not a de Polignac number, because 212537144086457 - 2³⁴ = 212519964217273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212537144086396 and 212537144086405.

It is not an unprimeable number, because it can be changed into a prime (212537144086459) 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, 21283506332 + ... + 21283516317.

It is an arithmetic number, because the mean of its divisors is an integer number (53144927778525).

Almost surely, 2^{212537144086457} is an apocalyptic number.

It is an amenable number.

212537144086457 is a deficient number, since it is larger than the sum of its proper divisors (42567027643).

212537144086457 is an equidigital number, since it uses as much as digits as its factorization.

212537144086457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42567027642.

The product of its (nonzero) digits is 45158400, while the sum is 59.

The spelling of 212537144086457 in words is "two hundred twelve trillion, five hundred thirty-seven billion, one hundred forty-four million, eighty-six thousand, four hundred fifty-seven".