99449921634 has 32 divisors (see below), whose sum is σ = 228289726080. Its totient is φ = 28292310912.

The previous prime is 99449921633. The next prime is 99449921653. The reversal of 99449921634 is 43612994499.

It is not an unprimeable number, because it can be changed into a prime (99449921633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5071449 + ... + 5091020.

It is an arithmetic number, because the mean of its divisors is an integer number (7134053940).

Almost surely, 2^99449921634 is an apocalyptic number.

99449921634 is an abundant number, since it is smaller than the sum of its proper divisors (128839804446).

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

99449921634 is a wasteful number, since it uses less digits than its factorization.

99449921634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10162714.

The product of its digits is 15116544, while the sum is 60.

The spelling of 99449921634 in words is "ninety-nine billion, four hundred forty-nine million, nine hundred twenty-one thousand, six hundred thirty-four".