9900464220544 has 32 divisors (see below), whose sum is σ = 19728109047600. Its totient is φ = 4949095675392.

The previous prime is 9900464220533. The next prime is 9900464220551. The reversal of 9900464220544 is 4450224640099.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8318524 + ... + 9433915.

Almost surely, 2^{9900464220544} is an apocalyptic number.

It is an amenable number.

9900464220544 is a deficient number, since it is larger than the sum of its proper divisors (9827644827056).

9900464220544 is a wasteful number, since it uses less digits than its factorization.

9900464220544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17756810 (or 17756798 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 9900464220544 in words is "nine trillion, nine hundred billion, four hundred sixty-four million, two hundred twenty thousand, five hundred forty-four".