20401401005 has 8 divisors (see below), whose sum is σ = 25546102272. Its totient is φ = 15611506768.

The previous prime is 20401401001. The next prime is 20401401019. The reversal of 20401401005 is 50010410402.

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

It is a cyclic number.

It is not a de Polignac number, because 20401401005 - 2² = 20401401001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401401001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88701629 + ... + 88701858.

It is an arithmetic number, because the mean of its divisors is an integer number (3193262784).

Almost surely, 2^20401401005 is an apocalyptic number.

It is an amenable number.

20401401005 is a deficient number, since it is larger than the sum of its proper divisors (5144701267).

20401401005 is a wasteful number, since it uses less digits than its factorization.

20401401005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177403515.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 20401401005 its reverse (50010410402), we get a palindrome (70411811407).

The spelling of 20401401005 in words is "twenty billion, four hundred one million, four hundred one thousand, five".