20417875450 has 24 divisors (see below), whose sum is σ = 43402570272. Its totient is φ = 7000414320.

The previous prime is 20417875393. The next prime is 20417875451. The reversal of 20417875450 is 5457871402.

It is a junction number, because it is equal to n+sod(n) for n = 20417875397 and 20417875406.

It is not an unprimeable number, because it can be changed into a prime (20417875451) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 29168044 + ... + 29168743.

It is an arithmetic number, because the mean of its divisors is an integer number (1808440428).

Almost surely, 2^20417875450 is an apocalyptic number.

20417875450 is an abundant number, since it is smaller than the sum of its proper divisors (22984694822).

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

20417875450 is a wasteful number, since it uses less digits than its factorization.

20417875450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58336806 (or 58336801 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 43.

The spelling of 20417875450 in words is "twenty billion, four hundred seventeen million, eight hundred seventy-five thousand, four hundred fifty".