254203421520019 has 2 divisors, whose sum is σ = 254203421520020. Its totient is φ = 254203421520018.

The previous prime is 254203421520011. The next prime is 254203421520053. The reversal of 254203421520019 is 910025124302452.

It is a happy number.

254203421520019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 254203421520019 - 2³ = 254203421520011 is a prime.

It is a super-2 number, since 2×254203421520019² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (254203421520011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127101710760009 + 127101710760010.

It is an arithmetic number, because the mean of its divisors is an integer number (127101710760010).

Almost surely, 2^{254203421520019} is an apocalyptic number.

254203421520019 is a deficient number, since it is larger than the sum of its proper divisors (1).

254203421520019 is an equidigital number, since it uses as much as digits as its factorization.

254203421520019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 254203421520019 in words is "two hundred fifty-four trillion, two hundred three billion, four hundred twenty-one million, five hundred twenty thousand, nineteen".