55918060899 has 8 divisors (see below), whose sum is σ = 74558675712. Its totient is φ = 37278076680.

The previous prime is 55918060879. The next prime is 55918060949. The reversal of 55918060899 is 99806081955.

It is a Cunningham number, because it is equal to 236470²-1.

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

It is not a de Polignac number, because 55918060899 - 2¹⁹ = 55917536611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55918060879) 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, 118234 + ... + 354704.

It is an arithmetic number, because the mean of its divisors is an integer number (9319834464).

Almost surely, 2^55918060899 is an apocalyptic number.

55918060899 is a deficient number, since it is larger than the sum of its proper divisors (18640614813).

55918060899 is a wasteful number, since it uses less digits than its factorization.

55918060899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315297.

The product of its (nonzero) digits is 6998400, while the sum is 60.

The spelling of 55918060899 in words is "fifty-five billion, nine hundred eighteen million, sixty thousand, eight hundred ninety-nine".