154203215413223 has 2 divisors, whose sum is σ = 154203215413224. Its totient is φ = 154203215413222.

The previous prime is 154203215413207. The next prime is 154203215413231. The reversal of 154203215413223 is 322314512302451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 154203215413223 - 2⁴ = 154203215413207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154203212413223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77101607706611 + 77101607706612.

It is an arithmetic number, because the mean of its divisors is an integer number (77101607706612).

Almost surely, 2^{154203215413223} is an apocalyptic number.

154203215413223 is a deficient number, since it is larger than the sum of its proper divisors (1).

154203215413223 is an equidigital number, since it uses as much as digits as its factorization.

154203215413223 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 38.

Adding to 154203215413223 its reverse (322314512302451), we get a palindrome (476517727715674).

The spelling of 154203215413223 in words is "one hundred fifty-four trillion, two hundred three billion, two hundred fifteen million, four hundred thirteen thousand, two hundred twenty-three".