55418005390289 has 32 divisors (see below), whose sum is σ = 59944404339360. Its totient is φ = 51037622272000.

The previous prime is 55418005390217. The next prime is 55418005390301. The reversal of 55418005390289 is 98209350081455.

It can be written as a sum of positive squares in 16 ways, for example, as 2797373326225 + 52620632064064 = 1672535^2 + 7254008^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55418005390289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55418005398289) 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 31 ways as a sum of consecutive naturals, for example, 3136445147 + ... + 3136462815.

It is an arithmetic number, because the mean of its divisors is an integer number (1873262635605).

Almost surely, 2^{55418005390289} is an apocalyptic number.

It is an amenable number.

55418005390289 is a deficient number, since it is larger than the sum of its proper divisors (4526398949071).

55418005390289 is a wasteful number, since it uses less digits than its factorization.

55418005390289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26821.

The product of its (nonzero) digits is 15552000, while the sum is 59.

The spelling of 55418005390289 in words is "fifty-five trillion, four hundred eighteen billion, five million, three hundred ninety thousand, two hundred eighty-nine".