129877348226 has 8 divisors (see below), whose sum is σ = 194826556044. Its totient is φ = 64935162880.

The previous prime is 129877348201. The next prime is 129877348231. The reversal of 129877348226 is 622843778921.

It is a Cunningham number, because it is equal to 360385²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 129877348225 + 1 = 360385^2 + 1^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1709135 + ... + 1783506.

Almost surely, 2^129877348226 is an apocalyptic number.

129877348226 is a deficient number, since it is larger than the sum of its proper divisors (64949207818).

129877348226 is a wasteful number, since it uses less digits than its factorization.

129877348226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511236.

The product of its digits is 16257024, while the sum is 59.

The spelling of 129877348226 in words is "one hundred twenty-nine billion, eight hundred seventy-seven million, three hundred forty-eight thousand, two hundred twenty-six".