1555616606055 has 16 divisors (see below), whose sum is σ = 2496372294624. Its totient is φ = 827200281600.

The previous prime is 1555616606051. The next prime is 1555616606087. The reversal of 1555616606055 is 5506066165551.

It is not a de Polignac number, because 1555616606055 - 2² = 1555616606051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1555616605989 and 1555616606007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555616606051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153864046 + ... + 153874155.

It is an arithmetic number, because the mean of its divisors is an integer number (156023268414).

Almost surely, 2^{1555616606055} is an apocalyptic number.

1555616606055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1555616606055 is a deficient number, since it is larger than the sum of its proper divisors (940755688569).

1555616606055 is a wasteful number, since it uses less digits than its factorization.

1555616606055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307738546.

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 1555616606055 in words is "one trillion, five hundred fifty-five billion, six hundred sixteen million, six hundred six thousand, fifty-five".