129387484629 has 48 divisors (see below), whose sum is σ = 211317724800. Its totient is φ = 75729886848.

The previous prime is 129387484627. The next prime is 129387484649. The reversal of 129387484629 is 926484783921.

129387484629 is a `hidden beast` number, since 1 + 2 + 93 + 8 + 7 + 484 + 62 + 9 = 666.

It is not a de Polignac number, because 129387484629 - 2¹ = 129387484627 is a prime.

It is a super-2 number, since 2×129387484629² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129387484621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57249 + ... + 511910.

It is an arithmetic number, because the mean of its divisors is an integer number (4402452600).

Almost surely, 2^129387484629 is an apocalyptic number.

It is an amenable number.

129387484629 is a deficient number, since it is larger than the sum of its proper divisors (81930240171).

129387484629 is a wasteful number, since it uses less digits than its factorization.

129387484629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569274 (or 569271 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The spelling of 129387484629 in words is "one hundred twenty-nine billion, three hundred eighty-seven million, four hundred eighty-four thousand, six hundred twenty-nine".