129281301019 has 32 divisors (see below), whose sum is σ = 153539778560. Its totient is φ = 107775360000.

The previous prime is 129281300971. The next prime is 129281301031. The reversal of 129281301019 is 910103182921.

It is a cyclic number.

It is not a de Polignac number, because 129281301019 - 2¹⁵ = 129281268251 is a prime.

It is a super-2 number, since 2×129281301019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129281301049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387019 + ... + 639019.

It is an arithmetic number, because the mean of its divisors is an integer number (4798118080).

Almost surely, 2^129281301019 is an apocalyptic number.

129281301019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

129281301019 is a deficient number, since it is larger than the sum of its proper divisors (24258477541).

129281301019 is a wasteful number, since it uses less digits than its factorization.

129281301019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252131.

The product of its (nonzero) digits is 7776, while the sum is 37.

The spelling of 129281301019 in words is "one hundred twenty-nine billion, two hundred eighty-one million, three hundred one thousand, nineteen".