129849604861 has 8 divisors (see below), whose sum is σ = 134051710464. Its totient is φ = 125648337360.

The previous prime is 129849604847. The next prime is 129849604877. The reversal of 129849604861 is 168406948921.

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 129849604861 - 2¹⁹ = 129849080573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129849604796 and 129849604805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129849605861) 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, 113271 + ... + 522043.

It is an arithmetic number, because the mean of its divisors is an integer number (16756463808).

Almost surely, 2^129849604861 is an apocalyptic number.

It is an amenable number.

129849604861 is a deficient number, since it is larger than the sum of its proper divisors (4202105603).

129849604861 is a wasteful number, since it uses less digits than its factorization.

129849604861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419051.

The product of its (nonzero) digits is 5971968, while the sum is 58.

The spelling of 129849604861 in words is "one hundred twenty-nine billion, eight hundred forty-nine million, six hundred four thousand, eight hundred sixty-one".