55542399999 has 8 divisors (see below), whose sum is σ = 74089209600. Its totient is φ = 37011928536.

The previous prime is 55542399989. The next prime is 55542400007. The reversal of 55542399999 is 99999324555.

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

It is not a de Polignac number, because 55542399999 - 2¹¹ = 55542397951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55542399989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4076599 + ... + 4090200.

It is an arithmetic number, because the mean of its divisors is an integer number (9261151200).

Almost surely, 2^55542399999 is an apocalyptic number.

55542399999 is a deficient number, since it is larger than the sum of its proper divisors (18546809601).

55542399999 is a wasteful number, since it uses less digits than its factorization.

55542399999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8169069.

The product of its digits is 177147000, while the sum is 69.

The spelling of 55542399999 in words is "fifty-five billion, five hundred forty-two million, three hundred ninety-nine thousand, nine hundred ninety-nine".