129563747331 has 8 divisors (see below), whose sum is σ = 172765481664. Its totient is φ = 86368922280.

The previous prime is 129563747237. The next prime is 129563747333. The reversal of 129563747331 is 133747365921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129563747331 - 2¹³ = 129563739139 is a prime.

It is a super-2 number, since 2×129563747331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129563747333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1683405 + ... + 1758686.

It is an arithmetic number, because the mean of its divisors is an integer number (21595685208).

Almost surely, 2^129563747331 is an apocalyptic number.

129563747331 is a deficient number, since it is larger than the sum of its proper divisors (43201734333).

129563747331 is a wasteful number, since it uses less digits than its factorization.

129563747331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3454641.

The product of its digits is 2857680, while the sum is 51.

The spelling of 129563747331 in words is "one hundred twenty-nine billion, five hundred sixty-three million, seven hundred forty-seven thousand, three hundred thirty-one".