20006444044400 has 120 divisors (see below), whose sum is σ = 52954231368528. Its totient is φ = 7203040000000.

The previous prime is 20006444044333. The next prime is 20006444044429. The reversal of 20006444044400 is 444044460002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22065101 + ... + 22953900.

Almost surely, 2^{20006444044400} is an apocalyptic number.

20006444044400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20006444044400 is an abundant number, since it is smaller than the sum of its proper divisors (32947787324128).

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

20006444044400 is a wasteful number, since it uses less digits than its factorization.

20006444044400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45019131 (or 45019120 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

The spelling of 20006444044400 in words is "twenty trillion, six billion, four hundred forty-four million, forty-four thousand, four hundred".