129164047236 has 243 divisors, whose sum is σ = 390805660791. Its totient is φ = 35864646048.

The previous prime is 129164047223. The next prime is 129164047241. The reversal of 129164047236 is 632740461921.

The square root of 129164047236 is 359394.

It is a perfect power (a square), and thus also a powerful number.

129164047236 is a `hidden beast` number, since 1 + 2 + 9 + 1 + 6 + 404 + 7 + 236 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 129164047191 and 129164047200.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 649065465 + ... + 649065663.

Almost surely, 2^129164047236 is an apocalyptic number.

129164047236 is the 359394-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129164047236

129164047236 is an abundant number, since it is smaller than the sum of its proper divisors (261641613555).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129164047236 is a wasteful number, since it uses less digits than its factorization.

129164047236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 129164047236 in words is "one hundred twenty-nine billion, one hundred sixty-four million, forty-seven thousand, two hundred thirty-six".