129476450075 has 36 divisors (see below), whose sum is σ = 189851338320. Its totient is φ = 85705368000.

The previous prime is 129476450041. The next prime is 129476450093. The reversal of 129476450075 is 570054674921.

It is a happy number.

It is not a de Polignac number, because 129476450075 - 2¹⁶ = 129476384539 is a prime.

It is a super-3 number, since 3×129476450075³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25631300 + ... + 25636350.

Almost surely, 2^129476450075 is an apocalyptic number.

129476450075 is a deficient number, since it is larger than the sum of its proper divisors (60374888245).

129476450075 is an frugal number, since it uses more digits than its factorization.

129476450075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10148 (or 5092 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 129476450075 in words is "one hundred twenty-nine billion, four hundred seventy-six million, four hundred fifty thousand, seventy-five".