129244634641 has 8 divisors (see below), whose sum is σ = 129881725568. Its totient is φ = 128608722000.

The previous prime is 129244634609. The next prime is 129244634663. The reversal of 129244634641 is 146436442921.

129244634641 = T₂₉₃₅₃₄ + T₂₉₃₅₃₅ + T₂₉₃₅₃₆.

It is a happy number.

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

It is a 4-Lehmer number, since φ(129244634641) divides (129244634641-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 129244634641 - 2⁵ = 129244634609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129244634591 and 129244634600.

It is not an unprimeable number, because it can be changed into a prime (129244634671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74250 + ... + 513811.

It is an arithmetic number, because the mean of its divisors is an integer number (16235215696).

Almost surely, 2^129244634641 is an apocalyptic number.

129244634641 is the 293536-th centered triangular number.

It is an amenable number.

129244634641 is a deficient number, since it is larger than the sum of its proper divisors (637090927).

129244634641 is an equidigital number, since it uses as much as digits as its factorization.

129244634641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589143.

The product of its digits is 995328, while the sum is 46.

The spelling of 129244634641 in words is "one hundred twenty-nine billion, two hundred forty-four million, six hundred thirty-four thousand, six hundred forty-one".