129137699047 has 4 divisors (see below), whose sum is σ = 147585941776. Its totient is φ = 110689456320.

The previous prime is 129137699023. The next prime is 129137699051. The reversal of 129137699047 is 740996731921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129137699047 - 2⁷ = 129137698919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129137698982 and 129137699000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129137609047) by changing a digit.

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, 9224121354 + ... + 9224121367.

It is an arithmetic number, because the mean of its divisors is an integer number (36896485444).

Almost surely, 2^129137699047 is an apocalyptic number.

129137699047 is a deficient number, since it is larger than the sum of its proper divisors (18448242729).

129137699047 is an equidigital number, since it uses as much as digits as its factorization.

129137699047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18448242728.

The product of its (nonzero) digits is 5143824, while the sum is 58.

The spelling of 129137699047 in words is "one hundred twenty-nine billion, one hundred thirty-seven million, six hundred ninety-nine thousand, forty-seven".