55979306129 has 4 divisors (see below), whose sum is σ = 57909627060. Its totient is φ = 54048985200.

The previous prime is 55979306113. The next prime is 55979306143. The reversal of 55979306129 is 92160397955.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92160397955 = 5 ⋅18432079591.

It can be written as a sum of positive squares in 2 ways, for example, as 37956780625 + 18022525504 = 194825^2 + 134248^2 .

It is a cyclic number.

It is not a de Polignac number, because 55979306129 - 2⁴ = 55979306113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55979306179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965160422 + ... + 965160479.

It is an arithmetic number, because the mean of its divisors is an integer number (14477406765).

Almost surely, 2^55979306129 is an apocalyptic number.

It is an amenable number.

55979306129 is a deficient number, since it is larger than the sum of its proper divisors (1930320931).

55979306129 is a wasteful number, since it uses less digits than its factorization.

55979306129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930320930.

The product of its (nonzero) digits is 4592700, while the sum is 56.

The spelling of 55979306129 in words is "fifty-five billion, nine hundred seventy-nine million, three hundred six thousand, one hundred twenty-nine".