129849561799 has 8 divisors (see below), whose sum is σ = 131186056320. Its totient is φ = 128518299000.

The previous prime is 129849561773. The next prime is 129849561827. The reversal of 129849561799 is 997165948921.

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 129849561799 - 2¹³ = 129849553607 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 (129849561199) 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, 1258027 + ... + 1357324.

It is an arithmetic number, because the mean of its divisors is an integer number (16398257040).

Almost surely, 2^129849561799 is an apocalyptic number.

129849561799 is a deficient number, since it is larger than the sum of its proper divisors (1336494521).

129849561799 is a wasteful number, since it uses less digits than its factorization.

129849561799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615861.

The product of its digits is 88179840, while the sum is 70.

The spelling of 129849561799 in words is "one hundred twenty-nine billion, eight hundred forty-nine million, five hundred sixty-one thousand, seven hundred ninety-nine".