20108106357 has 4 divisors (see below), whose sum is σ = 26810808480. Its totient is φ = 13405404236.

The previous prime is 20108106329. The next prime is 20108106367. The reversal of 20108106357 is 75360180102.

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 20108106357 - 2⁷ = 20108106229 is a prime.

It is a super-2 number, since 2×20108106357² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20108106367) 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, 3351351057 + ... + 3351351062.

It is an arithmetic number, because the mean of its divisors is an integer number (6702702120).

Almost surely, 2^20108106357 is an apocalyptic number.

It is an amenable number.

20108106357 is a deficient number, since it is larger than the sum of its proper divisors (6702702123).

20108106357 is an equidigital number, since it uses as much as digits as its factorization.

20108106357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702702122.

The product of its (nonzero) digits is 10080, while the sum is 33.

Adding to 20108106357 its reverse (75360180102), we get a palindrome (95468286459).

The spelling of 20108106357 in words is "twenty billion, one hundred eight million, one hundred six thousand, three hundred fifty-seven".