20408046468 has 12 divisors (see below), whose sum is σ = 47618775120. Its totient is φ = 6802682152.

The previous prime is 20408046467. The next prime is 20408046473. The reversal of 20408046468 is 86464080402.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20408046467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850335258 + ... + 850335281.

It is an arithmetic number, because the mean of its divisors is an integer number (3968231260).

Almost surely, 2^20408046468 is an apocalyptic number.

It is an amenable number.

20408046468 is an abundant number, since it is smaller than the sum of its proper divisors (27210728652).

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

20408046468 is a wasteful number, since it uses less digits than its factorization.

20408046468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700670546 (or 1700670544 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 20408046468 in words is "twenty billion, four hundred eight million, forty-six thousand, four hundred sixty-eight".