1556340613055 has 64 divisors (see below), whose sum is σ = 2075022213120. Its totient is φ = 1115844595200.

The previous prime is 1556340613033. The next prime is 1556340613111. The reversal of 1556340613055 is 5503160436551.

It is a happy number.

It is not a de Polignac number, because 1556340613055 - 2¹⁰ = 1556340612031 is a prime.

It is a super-2 number, since 2×1556340613055² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1556340612997 and 1556340613015.

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, 121383545 + ... + 121396365.

It is an arithmetic number, because the mean of its divisors is an integer number (32422222080).

Almost surely, 2^{1556340613055} is an apocalyptic number.

1556340613055 is a deficient number, since it is larger than the sum of its proper divisors (518681600065).

1556340613055 is a wasteful number, since it uses less digits than its factorization.

1556340613055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13800.

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 1556340613055 in words is "one trillion, five hundred fifty-six billion, three hundred forty million, six hundred thirteen thousand, fifty-five".