1557135359999 has 4 divisors (see below), whose sum is σ = 1648731557664. Its totient is φ = 1465539162336.

The previous prime is 1557135359971. The next prime is 1557135360013. The reversal of 1557135359999 is 9999535317551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1557135359999 - 2³² = 1552840392703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557135359599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45798098807 + ... + 45798098840.

It is an arithmetic number, because the mean of its divisors is an integer number (412182889416).

Almost surely, 2^{1557135359999} is an apocalyptic number.

1557135359999 is a deficient number, since it is larger than the sum of its proper divisors (91596197665).

1557135359999 is an equidigital number, since it uses as much as digits as its factorization.

1557135359999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91596197664.

The product of its digits is 258339375, while the sum is 71.

The spelling of 1557135359999 in words is "one trillion, five hundred fifty-seven billion, one hundred thirty-five million, three hundred fifty-nine thousand, nine hundred ninety-nine".