20450468406 has 16 divisors (see below), whose sum is σ = 40902346800. Its totient is φ = 6816587808.

The previous prime is 20450468383. The next prime is 20450468407. The reversal of 20450468406 is 60486405402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450468407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280480 + ... + 345788.

It is an arithmetic number, because the mean of its divisors is an integer number (2556396675).

Almost surely, 2^20450468406 is an apocalyptic number.

20450468406 is an abundant number, since it is smaller than the sum of its proper divisors (20451878394).

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

20450468406 is a wasteful number, since it uses less digits than its factorization.

20450468406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117503.

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 20450468406 in words is "twenty billion, four hundred fifty million, four hundred sixty-eight thousand, four hundred six".