405555550555558 has 16 divisors (see below), whose sum is σ = 671106933566496. Its totient is φ = 182614131581760.

The previous prime is 405555550555543. The next prime is 405555550555559. The reversal of 405555550555558 is 855555055555504.

It is a super-3 number, since 3×405555550555558³ (a number of 45 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 405555550555493 and 405555550555502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405555550555559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190223052666 + ... + 190223054797.

It is an arithmetic number, because the mean of its divisors is an integer number (41944183347906).

Almost surely, 2^{405555550555558} is an apocalyptic number.

405555550555558 is a deficient number, since it is larger than the sum of its proper divisors (265551383010938).

405555550555558 is a wasteful number, since it uses less digits than its factorization.

405555550555558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380446107519.

The product of its (nonzero) digits is 1562500000, while the sum is 67.

The spelling of 405555550555558 in words is "four hundred five trillion, five hundred fifty-five billion, five hundred fifty million, five hundred fifty-five thousand, five hundred fifty-eight".