213120379959 has 4 divisors (see below), whose sum is σ = 284160506616. Its totient is φ = 142080253304.

The previous prime is 213120379903. The next prime is 213120379973. The reversal of 213120379959 is 959973021312.

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 213120379959 - 2⁹ = 213120379447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120379999) 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, 35520063324 + ... + 35520063329.

It is an arithmetic number, because the mean of its divisors is an integer number (71040126654).

Almost surely, 2^213120379959 is an apocalyptic number.

213120379959 is a deficient number, since it is larger than the sum of its proper divisors (71040126657).

213120379959 is an equidigital number, since it uses as much as digits as its factorization.

213120379959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71040126656.

The product of its (nonzero) digits is 918540, while the sum is 51.

The spelling of 213120379959 in words is "two hundred thirteen billion, one hundred twenty million, three hundred seventy-nine thousand, nine hundred fifty-nine".