129437882078 has 8 divisors (see below), whose sum is σ = 194433796440. Its totient is φ = 64626616600.

The previous prime is 129437882039. The next prime is 129437882087. The reversal of 129437882078 is 870288734921.

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, 46160468 + ... + 46163271.

It is an arithmetic number, because the mean of its divisors is an integer number (24304224555).

Almost surely, 2^129437882078 is an apocalyptic number.

129437882078 is a deficient number, since it is larger than the sum of its proper divisors (64995914362).

129437882078 is an equidigital number, since it uses as much as digits as its factorization.

129437882078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92324442.

The product of its (nonzero) digits is 10838016, while the sum is 59.

The spelling of 129437882078 in words is "one hundred twenty-nine billion, four hundred thirty-seven million, eight hundred eighty-two thousand, seventy-eight".