20100040404 has 12 divisors (see below), whose sum is σ = 46900094304. Its totient is φ = 6700013464.

The previous prime is 20100040393. The next prime is 20100040417. The reversal of 20100040404 is 40404000102.

It is a tau number, because it is divible by the number of its divisors (12).

20100040404 is a modest number, since divided by 40404 gives 20100 as remainder.

It is a congruent 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, 837501672 + ... + 837501695.

It is an arithmetic number, because the mean of its divisors is an integer number (3908341192).

Almost surely, 2^20100040404 is an apocalyptic number.

It is an amenable number.

20100040404 is an abundant number, since it is smaller than the sum of its proper divisors (26800053900).

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

20100040404 is a wasteful number, since it uses less digits than its factorization.

20100040404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675003374 (or 1675003372 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20100040404 its reverse (40404000102), we get a palindrome (60504040506).

The spelling of 20100040404 in words is "twenty billion, one hundred million, forty thousand, four hundred four".