2100253303457 has 2 divisors, whose sum is σ = 2100253303458. Its totient is φ = 2100253303456.

The previous prime is 2100253303433. The next prime is 2100253303471. The reversal of 2100253303457 is 7543033520012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1840149223441 + 260104080016 = 1356521^2 + 510004^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100253303457 - 2³⁸ = 1825375396513 is a prime.

It is a super-2 number, since 2×2100253303457² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2100253303417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050126651728 + 1050126651729.

It is an arithmetic number, because the mean of its divisors is an integer number (1050126651729).

Almost surely, 2^{2100253303457} is an apocalyptic number.

It is an amenable number.

2100253303457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100253303457 is an equidigital number, since it uses as much as digits as its factorization.

2100253303457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 35.

Adding to 2100253303457 its reverse (7543033520012), we get a palindrome (9643286823469).

The spelling of 2100253303457 in words is "two trillion, one hundred billion, two hundred fifty-three million, three hundred three thousand, four hundred fifty-seven".