166429291898 has 8 divisors (see below), whose sum is σ = 249648897108. Its totient is φ = 83212992864.

The previous prime is 166429291817. The next prime is 166429291909. The reversal of 166429291898 is 898192924661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 164054971369 + 2374320529 = 405037^2 + 48727^2 .

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, 696611 + ... + 904502.

Almost surely, 2^166429291898 is an apocalyptic number.

166429291898 is a deficient number, since it is larger than the sum of its proper divisors (83219605210).

166429291898 is a wasteful number, since it uses less digits than its factorization.

166429291898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653088.

The product of its digits is 26873856, while the sum is 65.

The spelling of 166429291898 in words is "one hundred sixty-six billion, four hundred twenty-nine million, two hundred ninety-one thousand, eight hundred ninety-eight".