129436357127 has 8 divisors (see below), whose sum is σ = 161375198592. Its totient is φ = 100859499000.

The previous prime is 129436357097. The next prime is 129436357139. The reversal of 129436357127 is 721753634921.

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 129436357127 - 2¹⁰ = 129436356103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129436357147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 840495749 + ... + 840495902.

It is an arithmetic number, because the mean of its divisors is an integer number (20171899824).

Almost surely, 2^129436357127 is an apocalyptic number.

129436357127 is a deficient number, since it is larger than the sum of its proper divisors (31938841465).

129436357127 is a wasteful number, since it uses less digits than its factorization.

129436357127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680991669.

The product of its digits is 1905120, while the sum is 50.

The spelling of 129436357127 in words is "one hundred twenty-nine billion, four hundred thirty-six million, three hundred fifty-seven thousand, one hundred twenty-seven".