20409624188 has 12 divisors (see below), whose sum is σ = 35810100480. Its totient is φ = 10178166912.

The previous prime is 20409624127. The next prime is 20409624203. The reversal of 20409624188 is 88142690402.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6659573 + ... + 6662636.

It is an arithmetic number, because the mean of its divisors is an integer number (2984175040).

Almost surely, 2^20409624188 is an apocalyptic number.

It is an amenable number.

20409624188 is a deficient number, since it is larger than the sum of its proper divisors (15400476292).

20409624188 is a wasteful number, since it uses less digits than its factorization.

20409624188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13322596 (or 13322594 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 20409624188 in words is "twenty billion, four hundred nine million, six hundred twenty-four thousand, one hundred eighty-eight".