129354309249 has 8 divisors (see below), whose sum is σ = 188151722592. Its totient is φ = 78396551040.

The previous prime is 129354309239. The next prime is 129354309257. The reversal of 129354309249 is 942903453921.

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

It is not a de Polignac number, because 129354309249 - 2⁴ = 129354309233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129354309229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1959913744 + ... + 1959913809.

It is an arithmetic number, because the mean of its divisors is an integer number (23518965324).

Almost surely, 2^129354309249 is an apocalyptic number.

It is an amenable number.

129354309249 is a deficient number, since it is larger than the sum of its proper divisors (58797413343).

129354309249 is a wasteful number, since it uses less digits than its factorization.

129354309249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919827567.

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 129354309249 in words is "one hundred twenty-nine billion, three hundred fifty-four million, three hundred nine thousand, two hundred forty-nine".