20409624120 has 64 divisors (see below), whose sum is σ = 61238437920. Its totient is φ = 5441716224.

The previous prime is 20409624119. The next prime is 20409624127. The reversal of 20409624120 is 2142690402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20409624127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1282452 + ... + 1298268.

Almost surely, 2^20409624120 is an apocalyptic number.

20409624120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20409624120 is an abundant number, since it is smaller than the sum of its proper divisors (40828813800).

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

20409624120 is a wasteful number, since it uses less digits than its factorization.

20409624120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26584 (or 26580 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 20409624120 in words is "twenty billion, four hundred nine million, six hundred twenty-four thousand, one hundred twenty".