155555504411055 has 64 divisors (see below), whose sum is σ = 285672965529600. Its totient is φ = 70804593982080.

The previous prime is 155555504411009. The next prime is 155555504411089. The reversal of 155555504411055 is 550114405555551.

It is not a de Polignac number, because 155555504411055 - 2⁹ = 155555504410543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155555504410989 and 155555504411007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19196116 + ... + 26069174.

It is an arithmetic number, because the mean of its divisors is an integer number (4463640086400).

Almost surely, 2^{155555504411055} is an apocalyptic number.

155555504411055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155555504411055 is a deficient number, since it is larger than the sum of its proper divisors (130117461118545).

155555504411055 is a wasteful number, since it uses less digits than its factorization.

155555504411055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6874004.

The product of its (nonzero) digits is 6250000, while the sum is 51.

The spelling of 155555504411055 in words is "one hundred fifty-five trillion, five hundred fifty-five billion, five hundred four million, four hundred eleven thousand, fifty-five".