20162021406 has 16 divisors (see below), whose sum is σ = 40376217744. Its totient is φ = 6711977984.

The previous prime is 20162021387. The next prime is 20162021423. The reversal of 20162021406 is 60412026102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2168931 + ... + 2178206.

It is an arithmetic number, because the mean of its divisors is an integer number (2523513609).

Almost surely, 2^20162021406 is an apocalyptic number.

20162021406 is an abundant number, since it is smaller than the sum of its proper divisors (20214196338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20162021406 is a wasteful number, since it uses less digits than its factorization.

20162021406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347915.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 20162021406 its reverse (60412026102), we get a palindrome (80574047508).

The spelling of 20162021406 in words is "twenty billion, one hundred sixty-two million, twenty-one thousand, four hundred six".