1557063100121 has 8 divisors (see below), whose sum is σ = 1599342646944. Its totient is φ = 1515343547520.

The previous prime is 1557063100079. The next prime is 1557063100181. The reversal of 1557063100121 is 1210013607551.

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 1557063100121 - 2²² = 1557058905817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1557063100181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139992920 + ... + 140004041.

It is an arithmetic number, because the mean of its divisors is an integer number (199917830868).

Almost surely, 2^{1557063100121} is an apocalyptic number.

It is an amenable number.

1557063100121 is a deficient number, since it is larger than the sum of its proper divisors (42279546823).

1557063100121 is an equidigital number, since it uses as much as digits as its factorization.

1557063100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279997111.

The product of its (nonzero) digits is 6300, while the sum is 32.

Adding to 1557063100121 its reverse (1210013607551), we get a palindrome (2767076707672).

The spelling of 1557063100121 in words is "one trillion, five hundred fifty-seven billion, sixty-three million, one hundred thousand, one hundred twenty-one".