129180141932581 has 8 divisors (see below), whose sum is σ = 129330161740800. Its totient is φ = 129030195150960.

The previous prime is 129180141932483. The next prime is 129180141932587. The reversal of 129180141932581 is 185239141081921.

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

It is a cyclic number.

It is not a de Polignac number, because 129180141932581 - 2³¹ = 129177994448933 is a prime.

It is a super-2 number, since 2×129180141932581² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129180141932587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14716305 + ... + 21792886.

It is an arithmetic number, because the mean of its divisors is an integer number (16166270217600).

Almost surely, 2^{129180141932581} is an apocalyptic number.

It is an amenable number.

129180141932581 is a deficient number, since it is larger than the sum of its proper divisors (150019808219).

129180141932581 is a wasteful number, since it uses less digits than its factorization.

129180141932581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36513299.

The product of its (nonzero) digits is 1244160, while the sum is 55.

The spelling of 129180141932581 in words is "one hundred twenty-nine trillion, one hundred eighty billion, one hundred forty-one million, nine hundred thirty-two thousand, five hundred eighty-one".