42648223529 has 2 divisors, whose sum is σ = 42648223530. Its totient is φ = 42648223528.

The previous prime is 42648223511. The next prime is 42648223559. The reversal of 42648223529 is 92532284624.

It is a happy number.

42648223529 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 can be written as a sum of positive squares in only one way, i.e., 40200250000 + 2447973529 = 200500^2 + 49477^2 .

It is a cyclic number.

It is not a de Polignac number, because 42648223529 - 2⁸ = 42648223273 is a prime.

It is not a weakly prime, because it can be changed into another prime (42648223559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21324111764 + 21324111765.

It is an arithmetic number, because the mean of its divisors is an integer number (21324111765).

Almost surely, 2^42648223529 is an apocalyptic number.

It is an amenable number.

42648223529 is a deficient number, since it is larger than the sum of its proper divisors (1).

42648223529 is an equidigital number, since it uses as much as digits as its factorization.

42648223529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 47.

The spelling of 42648223529 in words is "forty-two billion, six hundred forty-eight million, two hundred twenty-three thousand, five hundred twenty-nine".