99969529872 has 80 divisors (see below), whose sum is σ = 271539852480. Its totient is φ = 31646630400.

The previous prime is 99969529871. The next prime is 99969529883. The reversal of 99969529872 is 27892596999.

It is a junction number, because it is equal to n+sod(n) for n = 99969529794 and 99969529803.

It is not an unprimeable number, because it can be changed into a prime (99969529871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503754 + ... + 673577.

It is an arithmetic number, because the mean of its divisors is an integer number (3394248156).

Almost surely, 2^99969529872 is an apocalyptic number.

It is an amenable number.

99969529872 is an abundant number, since it is smaller than the sum of its proper divisors (171570322608).

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

99969529872 is a wasteful number, since it uses less digits than its factorization.

99969529872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177432 (or 1177426 counting only the distinct ones).

The product of its digits is 396809280, while the sum is 75.

The spelling of 99969529872 in words is "ninety-nine billion, nine hundred sixty-nine million, five hundred twenty-nine thousand, eight hundred seventy-two".