4255621747019 has 2 divisors, whose sum is σ = 4255621747020. Its totient is φ = 4255621747018.

The previous prime is 4255621746977. The next prime is 4255621747057. The reversal of 4255621747019 is 9107471265524.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4255621747019 is a prime.

It is a super-2 number, since 2×4255621747019² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4255621747079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2127810873509 + 2127810873510.

It is an arithmetic number, because the mean of its divisors is an integer number (2127810873510).

Almost surely, 2^{4255621747019} is an apocalyptic number.

4255621747019 is a deficient number, since it is larger than the sum of its proper divisors (1).

4255621747019 is an equidigital number, since it uses as much as digits as its factorization.

4255621747019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 4255621747019 in words is "four trillion, two hundred fifty-five billion, six hundred twenty-one million, seven hundred forty-seven thousand, nineteen".