99885679000 has 128 divisors (see below), whose sum is σ = 248802840000. Its totient is φ = 37425484800.

The previous prime is 99885678983. The next prime is 99885679001. The reversal of 99885679000 is 97658899.

It is a self number, because there is not a number n which added to its sum of digits gives 99885679000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99885679001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1661466 + ... + 1720534.

Almost surely, 2^99885679000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99885679000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124401420000).

99885679000 is an abundant number, since it is smaller than the sum of its proper divisors (148917161000).

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

99885679000 is a wasteful number, since it uses less digits than its factorization.

99885679000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59198 (or 59184 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 61.

The spelling of 99885679000 in words is "ninety-nine billion, eight hundred eighty-five million, six hundred seventy-nine thousand".