20405465004402 has 48 divisors (see below), whose sum is σ = 46054918990080. Its totient is φ = 6771320189712.

The previous prime is 20405465004391. The next prime is 20405465004409. The reversal of 20405465004402 is 20440056450402.

20405465004402 is a `hidden beast` number, since 20 + 4 + 0 + 546 + 50 + 0 + 4 + 40 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (20405465004409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94031877 + ... + 94248632.

It is an arithmetic number, because the mean of its divisors is an integer number (959477478960).

Almost surely, 2^{20405465004402} is an apocalyptic number.

20405465004402 is an abundant number, since it is smaller than the sum of its proper divisors (25649453985678).

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

20405465004402 is a wasteful number, since it uses less digits than its factorization.

20405465004402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188280749 (or 188280737 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

The spelling of 20405465004402 in words is "twenty trillion, four hundred five billion, four hundred sixty-five million, four thousand, four hundred two".