166951394429 has 8 divisors (see below), whose sum is σ = 168465650040. Its totient is φ = 165441423616.

The previous prime is 166951394411. The next prime is 166951394459. The reversal of 166951394429 is 924493159661.

It can be written as a sum of positive squares in 4 ways, for example, as 1117564900 + 165833829529 = 33430^2 + 407227^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166951394429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166951394459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992894 + ... + 1148799.

It is an arithmetic number, because the mean of its divisors is an integer number (21058206255).

Almost surely, 2^166951394429 is an apocalyptic number.

It is an amenable number.

166951394429 is a deficient number, since it is larger than the sum of its proper divisors (1514255611).

166951394429 is a wasteful number, since it uses less digits than its factorization.

166951394429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142399.

The product of its digits is 12597120, while the sum is 59.

The spelling of 166951394429 in words is "one hundred sixty-six billion, nine hundred fifty-one million, three hundred ninety-four thousand, four hundred twenty-nine".