55418344381455 has 256 divisors, whose sum is σ = 104100338073600. Its totient is φ = 24892515648000.

The previous prime is 55418344381451. The next prime is 55418344381511.

55418344381455 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55418344381455 - 2² = 55418344381451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55418344381451) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 20472235212 + ... + 20472237918.

It is an arithmetic number, because the mean of its divisors is an integer number (406641945600).

Almost surely, 2^{55418344381455} is an apocalyptic number.

55418344381455 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55418344381455 is a deficient number, since it is larger than the sum of its proper divisors (48681993692145).

55418344381455 is a wasteful number, since it uses less digits than its factorization.

55418344381455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586.

The product of its digits is 92160000, while the sum is 60.

The spelling of 55418344381455 in words is "fifty-five trillion, four hundred eighteen billion, three hundred forty-four million, three hundred eighty-one thousand, four hundred fifty-five".