129324263555 has 4 divisors (see below), whose sum is σ = 155189116272. Its totient is φ = 103459410840.

The previous prime is 129324263533. The next prime is 129324263561. The reversal of 129324263555 is 555362423921.

It is a happy number.

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

It is not a de Polignac number, because 129324263555 - 2¹⁰ = 129324262531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12932426351 + ... + 12932426360.

It is an arithmetic number, because the mean of its divisors is an integer number (38797279068).

Almost surely, 2^129324263555 is an apocalyptic number.

129324263555 is a deficient number, since it is larger than the sum of its proper divisors (25864852717).

129324263555 is an equidigital number, since it uses as much as digits as its factorization.

129324263555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25864852716.

The product of its digits is 1944000, while the sum is 47.

The spelling of 129324263555 in words is "one hundred twenty-nine billion, three hundred twenty-four million, two hundred sixty-three thousand, five hundred fifty-five".