1556068157123 has 12 divisors (see below), whose sum is σ = 1597611055320. Its totient is φ = 1515574279296.

The previous prime is 1556068157101. The next prime is 1556068157173. The reversal of 1556068157123 is 3217518606551.

It is not a de Polignac number, because 1556068157123 - 2³⁶ = 1487348680387 is a prime.

It is a super-2 number, since 2×1556068157123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1556068157173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 539333 + ... + 1844726.

It is an arithmetic number, because the mean of its divisors is an integer number (133134254610).

Almost surely, 2^{1556068157123} is an apocalyptic number.

1556068157123 is a deficient number, since it is larger than the sum of its proper divisors (41542898197).

1556068157123 is an equidigital number, since it uses as much as digits as its factorization.

1556068157123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384498 (or 2384455 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 50.

The spelling of 1556068157123 in words is "one trillion, five hundred fifty-six billion, sixty-eight million, one hundred fifty-seven thousand, one hundred twenty-three".