42658562509 has 2 divisors, whose sum is σ = 42658562510. Its totient is φ = 42658562508.

The previous prime is 42658562489. The next prime is 42658562647. The reversal of 42658562509 is 90526585624.

42658562509 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., 27640060009 + 15018502500 = 166253^2 + 122550^2 .

It is a cyclic number.

It is not a de Polignac number, because 42658562509 - 2¹³ = 42658554317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42658569509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21329281254 + 21329281255.

It is an arithmetic number, because the mean of its divisors is an integer number (21329281255).

Almost surely, 2^42658562509 is an apocalyptic number.

It is an amenable number.

42658562509 is a deficient number, since it is larger than the sum of its proper divisors (1).

42658562509 is an equidigital number, since it uses as much as digits as its factorization.

42658562509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184000, while the sum is 52.

The spelling of 42658562509 in words is "forty-two billion, six hundred fifty-eight million, five hundred sixty-two thousand, five hundred nine".