1556606356147 has 2 divisors, whose sum is σ = 1556606356148. Its totient is φ = 1556606356146.

The previous prime is 1556606356069. The next prime is 1556606356157. The reversal of 1556606356147 is 7416536066551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1556606356147 - 2¹¹ = 1556606354099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1556606356157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 778303178073 + 778303178074.

It is an arithmetic number, because the mean of its divisors is an integer number (778303178074).

Almost surely, 2^{1556606356147} is an apocalyptic number.

1556606356147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1556606356147 is an equidigital number, since it uses as much as digits as its factorization.

1556606356147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608000, while the sum is 55.

The spelling of 1556606356147 in words is "one trillion, five hundred fifty-six billion, six hundred six million, three hundred fifty-six thousand, one hundred forty-seven".