99178671029 has 4 divisors (see below), whose sum is σ = 99291247020. Its totient is φ = 99066095040.

The previous prime is 99178671023. The next prime is 99178671071. The reversal of 99178671029 is 92017687199.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28324216804 + 70854454225 = 168298^2 + 266185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99178671029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99178671023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56286674 + ... + 56288435.

It is an arithmetic number, because the mean of its divisors is an integer number (24822811755).

Almost surely, 2^99178671029 is an apocalyptic number.

It is an amenable number.

99178671029 is a deficient number, since it is larger than the sum of its proper divisors (112575991).

99178671029 is a wasteful number, since it uses less digits than its factorization.

99178671029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112575990.

The product of its (nonzero) digits is 3429216, while the sum is 59.

The spelling of 99178671029 in words is "ninety-nine billion, one hundred seventy-eight million, six hundred seventy-one thousand, twenty-nine".