2173356129 has 16 divisors (see below), whose sum is σ = 3366074240. Its totient is φ = 1221557760.

The previous prime is 2173356113. The next prime is 2173356131. The reversal of 2173356129 is 9216533712.

It is a happy number.

It is not a de Polignac number, because 2173356129 - 2⁴ = 2173356113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2173356139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847024 + ... + 849585.

It is an arithmetic number, because the mean of its divisors is an integer number (210379640).

Almost surely, 2^2173356129 is an apocalyptic number.

It is an amenable number.

2173356129 is a deficient number, since it is larger than the sum of its proper divisors (1192718111).

2173356129 is a wasteful number, since it uses less digits than its factorization.

2173356129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696680.

The product of its digits is 68040, while the sum is 39.

The square root of 2173356129 is about 46619.2677870427. The cubic root of 2173356129 is about 1295.3196845460.

The spelling of 2173356129 in words is "two billion, one hundred seventy-three million, three hundred fifty-six thousand, one hundred twenty-nine".