20205108146 has 8 divisors (see below), whose sum is σ = 30952506240. Its totient is φ = 9887606068.

The previous prime is 20205108139. The next prime is 20205108169. The reversal of 20205108146 is 64180150202.

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

It is a super-4 number, since 4×20205108146⁴ (a number of 42 digits) contains 4444 as substring.

It is a Curzon number.

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, 107473886 + ... + 107474073.

It is an arithmetic number, because the mean of its divisors is an integer number (3869063280).

Almost surely, 2^20205108146 is an apocalyptic number.

20205108146 is a deficient number, since it is larger than the sum of its proper divisors (10747398094).

20205108146 is a wasteful number, since it uses less digits than its factorization.

20205108146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214948008.

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 20205108146 its reverse (64180150202), we get a palindrome (84385258348).

The spelling of 20205108146 in words is "twenty billion, two hundred five million, one hundred eight thousand, one hundred forty-six".