424378786523 has 2 divisors, whose sum is σ = 424378786524. Its totient is φ = 424378786522.

The previous prime is 424378786519. The next prime is 424378786529. The reversal of 424378786523 is 325687873424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424378786523 - 2² = 424378786519 is a prime.

It is not a weakly prime, because it can be changed into another prime (424378786529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212189393261 + 212189393262.

It is an arithmetic number, because the mean of its divisors is an integer number (212189393262).

Almost surely, 2^424378786523 is an apocalyptic number.

424378786523 is a deficient number, since it is larger than the sum of its proper divisors (1).

424378786523 is an equidigital number, since it uses as much as digits as its factorization.

424378786523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54190080, while the sum is 59.

The spelling of 424378786523 in words is "four hundred twenty-four billion, three hundred seventy-eight million, seven hundred eighty-six thousand, five hundred twenty-three".