129169038782 has 8 divisors (see below), whose sum is σ = 221432637936. Its totient is φ = 55358159472.

The previous prime is 129169038727. The next prime is 129169038793. The reversal of 129169038782 is 287830961921.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4613179943 + ... + 4613179970.

It is an arithmetic number, because the mean of its divisors is an integer number (27679079742).

Almost surely, 2^129169038782 is an apocalyptic number.

129169038782 is a deficient number, since it is larger than the sum of its proper divisors (92263599154).

129169038782 is an equidigital number, since it uses as much as digits as its factorization.

129169038782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9226359922.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 129169038782 in words is "one hundred twenty-nine billion, one hundred sixty-nine million, thirty-eight thousand, seven hundred eighty-two".