129249484957 has 8 divisors (see below), whose sum is σ = 129900015936. Its totient is φ = 128599666272.

The previous prime is 129249484933. The next prime is 129249484961. The reversal of 129249484957 is 759484942921.

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 129249484957 - 2⁷ = 129249484829 is a prime.

It is a super-3 number, since 3×129249484957³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129249484967) 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, 187633 + ... + 541945.

It is an arithmetic number, because the mean of its divisors is an integer number (16237501992).

Almost surely, 2^129249484957 is an apocalyptic number.

It is an amenable number.

129249484957 is a deficient number, since it is larger than the sum of its proper divisors (650530979).

129249484957 is a wasteful number, since it uses less digits than its factorization.

129249484957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356147.

The product of its digits is 52254720, while the sum is 64.

The spelling of 129249484957 in words is "one hundred twenty-nine billion, two hundred forty-nine million, four hundred eighty-four thousand, nine hundred fifty-seven".