99772868244 has 48 divisors (see below), whose sum is σ = 271081012608. Its totient is φ = 27968673408.

The previous prime is 99772868243. The next prime is 99772868323. The reversal of 99772868244 is 44286827799.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99772868243) 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, 11200947 + ... + 11209850.

It is an arithmetic number, because the mean of its divisors is an integer number (5647521096).

Almost surely, 2^99772868244 is an apocalyptic number.

It is an amenable number.

99772868244 is an abundant number, since it is smaller than the sum of its proper divisors (171308144364).

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

99772868244 is a wasteful number, since it uses less digits than its factorization.

99772868244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22410864 (or 22410862 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 66.

The spelling of 99772868244 in words is "ninety-nine billion, seven hundred seventy-two million, eight hundred sixty-eight thousand, two hundred forty-four".