55115204123 has 8 divisors (see below), whose sum is σ = 66304005120. Its totient is φ = 44755203240.

The previous prime is 55115204117. The next prime is 55115204143. The reversal of 55115204123 is 32140251155.

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

It is a cyclic number.

It is not a de Polignac number, because 55115204123 - 2¹² = 55115200027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55115204143) 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 7 ways as a sum of consecutive naturals, for example, 207199883 + ... + 207200148.

It is an arithmetic number, because the mean of its divisors is an integer number (8288000640).

Almost surely, 2^55115204123 is an apocalyptic number.

55115204123 is a deficient number, since it is larger than the sum of its proper divisors (11188800997).

55115204123 is a wasteful number, since it uses less digits than its factorization.

55115204123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414400057.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 55115204123 its reverse (32140251155), we get a palindrome (87255455278).

The spelling of 55115204123 in words is "fifty-five billion, one hundred fifteen million, two hundred four thousand, one hundred twenty-three".