20111430404 has 24 divisors (see below), whose sum is σ = 37919594328. Its totient is φ = 9277966080.

The previous prime is 20111430397. The next prime is 20111430461. The reversal of 20111430404 is 40403411102.

It can be written as a sum of positive squares in 4 ways, for example, as 1067982400 + 19043448004 = 32680^2 + 137998^2 .

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, 28424 + ... + 202560.

It is an arithmetic number, because the mean of its divisors is an integer number (1579983097).

Almost surely, 2^20111430404 is an apocalyptic number.

It is an amenable number.

20111430404 is a deficient number, since it is larger than the sum of its proper divisors (17808163924).

20111430404 is a wasteful number, since it uses less digits than its factorization.

20111430404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176375 (or 176373 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20111430404 its reverse (40403411102), we get a palindrome (60514841506).

The spelling of 20111430404 in words is "twenty billion, one hundred eleven million, four hundred thirty thousand, four hundred four".