1556068157139 has 8 divisors (see below), whose sum is σ = 2081838627792. Its totient is φ = 1033838228960.

The previous prime is 1556068157101. The next prime is 1556068157173. The reversal of 1556068157139 is 9317518606551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1556068157139 - 2²³ = 1556059768531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1556068137139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885134592 + ... + 885136349.

It is an arithmetic number, because the mean of its divisors is an integer number (260229828474).

Almost surely, 2^{1556068157139} is an apocalyptic number.

1556068157139 is a deficient number, since it is larger than the sum of its proper divisors (525770470653).

1556068157139 is a wasteful number, since it uses less digits than its factorization.

1556068157139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770271237.

The product of its (nonzero) digits is 6804000, while the sum is 57.

The spelling of 1556068157139 in words is "one trillion, five hundred fifty-six billion, sixty-eight million, one hundred fifty-seven thousand, one hundred thirty-nine".