129474633547 has 4 divisors (see below), whose sum is σ = 147971009776. Its totient is φ = 110978257320.

The previous prime is 129474633517. The next prime is 129474633553. The reversal of 129474633547 is 745336474921.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 129474633547 - 2¹¹ = 129474631499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129474633517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9248188104 + ... + 9248188117.

It is an arithmetic number, because the mean of its divisors is an integer number (36992752444).

Almost surely, 2^129474633547 is an apocalyptic number.

129474633547 is a deficient number, since it is larger than the sum of its proper divisors (18496376229).

129474633547 is an equidigital number, since it uses as much as digits as its factorization.

129474633547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18496376228.

The product of its digits is 15240960, while the sum is 55.

The spelling of 129474633547 in words is "one hundred twenty-nine billion, four hundred seventy-four million, six hundred thirty-three thousand, five hundred forty-seven".