99078487872 has 112 divisors (see below), whose sum is σ = 322640260992. Its totient is φ = 26130585600.

The previous prime is 99078487861. The next prime is 99078487873. The reversal of 99078487872 is 27878487099.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 99078487797 and 99078487806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99078487873) 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, 2817879 + ... + 2852822.

It is an arithmetic number, because the mean of its divisors is an integer number (2880716616).

Almost surely, 2^99078487872 is an apocalyptic number.

It is an amenable number.

99078487872 is an abundant number, since it is smaller than the sum of its proper divisors (223561773120).

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

99078487872 is a wasteful number, since it uses less digits than its factorization.

99078487872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670736 (or 5670726 counting only the distinct ones).

The product of its (nonzero) digits is 113799168, while the sum is 69.

The spelling of 99078487872 in words is "ninety-nine billion, seventy-eight million, four hundred eighty-seven thousand, eight hundred seventy-two".