20140404101 has 8 divisors (see below), whose sum is σ = 21349465560. Its totient is φ = 18934046208.

The previous prime is 20140404091. The next prime is 20140404121. The reversal of 20140404101 is 10140404102.

It can be written as a sum of positive squares in 4 ways, for example, as 11723259076 + 8417145025 = 108274^2 + 91745^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-20140404101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20140404101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20140404121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660536 + ... + 690353.

It is an arithmetic number, because the mean of its divisors is an integer number (2668683195).

Almost surely, 2^20140404101 is an apocalyptic number.

It is an amenable number.

20140404101 is a deficient number, since it is larger than the sum of its proper divisors (1209061459).

20140404101 is a wasteful number, since it uses less digits than its factorization.

20140404101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351783.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20140404101 its reverse (10140404102), we get a palindrome (30280808203).

Subtracting from 20140404101 its reverse (10140404102), we obtain a palindrome (9999999999).

The spelling of 20140404101 in words is "twenty billion, one hundred forty million, four hundred four thousand, one hundred one".