2103245115557 has 2 divisors, whose sum is σ = 2103245115558. Its totient is φ = 2103245115556.

The previous prime is 2103245115533. The next prime is 2103245115617. The reversal of 2103245115557 is 7555115423012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1198589229601 + 904655885956 = 1094801^2 + 951134^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103245115557 - 2⁶ = 2103245115493 is a prime.

It is a super-2 number, since 2×2103245115557² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103245115527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051622557778 + 1051622557779.

It is an arithmetic number, because the mean of its divisors is an integer number (1051622557779).

Almost surely, 2^{2103245115557} is an apocalyptic number.

It is an amenable number.

2103245115557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103245115557 is an equidigital number, since it uses as much as digits as its factorization.

2103245115557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210000, while the sum is 41.

The spelling of 2103245115557 in words is "two trillion, one hundred three billion, two hundred forty-five million, one hundred fifteen thousand, five hundred fifty-seven".