212635403263 has 4 divisors (see below), whose sum is σ = 216121229608. Its totient is φ = 209149576920.

The previous prime is 212635403243. The next prime is 212635403293. The reversal of 212635403263 is 362304536212.

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

It is a cyclic number.

It is not a de Polignac number, because 212635403263 - 2²⁹ = 212098532351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212635403203) 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, 1742913081 + ... + 1742913202.

It is an arithmetic number, because the mean of its divisors is an integer number (54030307402).

Almost surely, 2^212635403263 is an apocalyptic number.

212635403263 is a deficient number, since it is larger than the sum of its proper divisors (3485826345).

212635403263 is an equidigital number, since it uses as much as digits as its factorization.

212635403263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485826344.

The product of its (nonzero) digits is 155520, while the sum is 37.

Adding to 212635403263 its reverse (362304536212), we get a palindrome (574939939475).

The spelling of 212635403263 in words is "two hundred twelve billion, six hundred thirty-five million, four hundred three thousand, two hundred sixty-three".