99578672871 has 16 divisors (see below), whose sum is σ = 137400920448. Its totient is φ = 64098496800.

The previous prime is 99578672861. The next prime is 99578672873. The reversal of 99578672871 is 17827687599.

It is not a de Polignac number, because 99578672871 - 2⁶ = 99578672807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99578672796 and 99578672805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99578672873) 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, 3409525 + ... + 3438606.

It is an arithmetic number, because the mean of its divisors is an integer number (8587557528).

Almost surely, 2^99578672871 is an apocalyptic number.

99578672871 is a deficient number, since it is larger than the sum of its proper divisors (37822247577).

99578672871 is a wasteful number, since it uses less digits than its factorization.

99578672871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6848302.

The product of its digits is 106686720, while the sum is 69.

The spelling of 99578672871 in words is "ninety-nine billion, five hundred seventy-eight million, six hundred seventy-two thousand, eight hundred seventy-one".