129850272001 has 4 divisors (see below), whose sum is σ = 129893544004. Its totient is φ = 129807000000.

The previous prime is 129850271989. The next prime is 129850272031. The reversal of 129850272001 is 100272058921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69371658225 + 60478613776 = 263385^2 + 245924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129850272001 is a prime.

It is a super-2 number, since 2×129850272001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129850272031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21631500 + ... + 21637501.

It is an arithmetic number, because the mean of its divisors is an integer number (32473386001).

Almost surely, 2^129850272001 is an apocalyptic number.

It is an amenable number.

129850272001 is a deficient number, since it is larger than the sum of its proper divisors (43272003).

129850272001 is an equidigital number, since it uses as much as digits as its factorization.

129850272001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43272002.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 129850272001 in words is "one hundred twenty-nine billion, eight hundred fifty million, two hundred seventy-two thousand, one".