20106210602 has 8 divisors (see below), whose sum is σ = 30248810436. Its totient is φ = 10023273792.

The previous prime is 20106210581. The next prime is 20106210611. The reversal of 20106210602 is 20601260102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19725921601 + 380289001 = 140449^2 + 19501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14914913 + ... + 14916260.

Almost surely, 2^20106210602 is an apocalyptic number.

20106210602 is a deficient number, since it is larger than the sum of its proper divisors (10142599834).

20106210602 is a wasteful number, since it uses less digits than its factorization.

20106210602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29831512.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20106210602 its reverse (20601260102), we get a palindrome (40707470704).

The spelling of 20106210602 in words is "twenty billion, one hundred six million, two hundred ten thousand, six hundred two".