136443171929 has 12 divisors (see below), whose sum is σ = 151023620916. Its totient is φ = 122833742592.

The previous prime is 136443171877. The next prime is 136443171959. The reversal of 136443171929 is 929171344631.

It can be written as a sum of positive squares in 2 ways, for example, as 47742250000 + 88700921929 = 218500^2 + 297827^2 .

It is not a de Polignac number, because 136443171929 - 2²⁸ = 136174736473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136443171959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7577084 + ... + 7595069.

It is an arithmetic number, because the mean of its divisors is an integer number (12585301743).

Almost surely, 2^136443171929 is an apocalyptic number.

It is an amenable number.

136443171929 is a deficient number, since it is larger than the sum of its proper divisors (14580448987).

136443171929 is a wasteful number, since it uses less digits than its factorization.

136443171929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15172216 (or 15172193 counting only the distinct ones).

The product of its digits is 979776, while the sum is 50.

The spelling of 136443171929 in words is "one hundred thirty-six billion, four hundred forty-three million, one hundred seventy-one thousand, nine hundred twenty-nine".