20409624192 has 64 divisors (see below), whose sum is σ = 55535376960. Its totient is φ = 6637271040.

The previous prime is 20409624127. The next prime is 20409624203. The reversal of 20409624192 is 29142690402.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 20409624192.

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, 632428 + ... + 663915.

It is an arithmetic number, because the mean of its divisors is an integer number (867740265).

Almost surely, 2^20409624192 is an apocalyptic number.

It is an amenable number.

20409624192 is an abundant number, since it is smaller than the sum of its proper divisors (35125752768).

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

20409624192 is a wasteful number, since it uses less digits than its factorization.

20409624192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296401 (or 1296389 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 20409624192 in words is "twenty billion, four hundred nine million, six hundred twenty-four thousand, one hundred ninety-two".