20658206379 has 4 divisors (see below), whose sum is σ = 27544275176. Its totient is φ = 13772137584.

The previous prime is 20658206351. The next prime is 20658206407. The reversal of 20658206379 is 97360285602.

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

It is an interprime number because it is at equal distance from previous prime (20658206351) and next prime (20658206407).

It is not a de Polignac number, because 20658206379 - 2¹⁶ = 20658140843 is a prime.

It is a super-2 number, since 2×20658206379² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20658206339) 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, 3443034394 + ... + 3443034399.

It is an arithmetic number, because the mean of its divisors is an integer number (6886068794).

Almost surely, 2^20658206379 is an apocalyptic number.

20658206379 is a deficient number, since it is larger than the sum of its proper divisors (6886068797).

20658206379 is an equidigital number, since it uses as much as digits as its factorization.

20658206379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6886068796.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 20658206379 in words is "twenty billion, six hundred fifty-eight million, two hundred six thousand, three hundred seventy-nine".