99878197106 has 8 divisors (see below), whose sum is σ = 154650111744. Its totient is φ = 48328159860.

The previous prime is 99878197091. The next prime is 99878197117. The reversal of 99878197106 is 60179187899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805469270 + ... + 805469393.

It is an arithmetic number, because the mean of its divisors is an integer number (19331263968).

Almost surely, 2^99878197106 is an apocalyptic number.

99878197106 is a deficient number, since it is larger than the sum of its proper divisors (54771914638).

99878197106 is a wasteful number, since it uses less digits than its factorization.

99878197106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610938696.

The product of its (nonzero) digits is 13716864, while the sum is 65.

The spelling of 99878197106 in words is "ninety-nine billion, eight hundred seventy-eight million, one hundred ninety-seven thousand, one hundred six".