212680423733 has 4 divisors (see below), whose sum is σ = 212767697580. Its totient is φ = 212593149888.

The previous prime is 212680423729. The next prime is 212680423741. The reversal of 212680423733 is 337324086212.

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 148500788164 + 64179635569 = 385358^2 + 253337^2 .

It is a cyclic number.

It is not a de Polignac number, because 212680423733 - 2² = 212680423729 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 (212680423133) 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, 43633268 + ... + 43638141.

It is an arithmetic number, because the mean of its divisors is an integer number (53191924395).

Almost surely, 2^212680423733 is an apocalyptic number.

It is an amenable number.

212680423733 is a deficient number, since it is larger than the sum of its proper divisors (87273847).

212680423733 is an equidigital number, since it uses as much as digits as its factorization.

212680423733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87273846.

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 212680423733 in words is "two hundred twelve billion, six hundred eighty million, four hundred twenty-three thousand, seven hundred thirty-three".