212620403913 has 4 divisors (see below), whose sum is σ = 283493871888. Its totient is φ = 141746935940.

The previous prime is 212620403909. The next prime is 212620403921. The reversal of 212620403913 is 319304026212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212620403913 - 2² = 212620403909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212620403923) 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, 35436733983 + ... + 35436733988.

It is an arithmetic number, because the mean of its divisors is an integer number (70873467972).

Almost surely, 2^212620403913 is an apocalyptic number.

It is an amenable number.

212620403913 is a deficient number, since it is larger than the sum of its proper divisors (70873467975).

212620403913 is an equidigital number, since it uses as much as digits as its factorization.

212620403913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70873467974.

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 212620403913 in words is "two hundred twelve billion, six hundred twenty million, four hundred three thousand, nine hundred thirteen".