42478495523 has 2 divisors, whose sum is σ = 42478495524. Its totient is φ = 42478495522.

The previous prime is 42478495517. The next prime is 42478495531. The reversal of 42478495523 is 32559487424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42478495523 - 2¹⁸ = 42478233379 is a prime.

It is not a weakly prime, because it can be changed into another prime (42478495573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21239247761 + 21239247762.

It is an arithmetic number, because the mean of its divisors is an integer number (21239247762).

Almost surely, 2^42478495523 is an apocalyptic number.

42478495523 is a deficient number, since it is larger than the sum of its proper divisors (1).

42478495523 is an equidigital number, since it uses as much as digits as its factorization.

42478495523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9676800, while the sum is 53.

The spelling of 42478495523 in words is "forty-two billion, four hundred seventy-eight million, four hundred ninety-five thousand, five hundred twenty-three".