405144501154247 has 2 divisors, whose sum is σ = 405144501154248. Its totient is φ = 405144501154246.

The previous prime is 405144501154223. The next prime is 405144501154319. The reversal of 405144501154247 is 742451105441504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405144501154247 - 2²⁰ = 405144500105671 is a prime.

It is a super-2 number, since 2×405144501154247² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405144501154147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202572250577123 + 202572250577124.

It is an arithmetic number, because the mean of its divisors is an integer number (202572250577124).

Almost surely, 2^{405144501154247} is an apocalyptic number.

405144501154247 is a deficient number, since it is larger than the sum of its proper divisors (1).

405144501154247 is an equidigital number, since it uses as much as digits as its factorization.

405144501154247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792000, while the sum is 47.

The spelling of 405144501154247 in words is "four hundred five trillion, one hundred forty-four billion, five hundred one million, one hundred fifty-four thousand, two hundred forty-seven".