42601785623 has 2 divisors, whose sum is σ = 42601785624. Its totient is φ = 42601785622.

The previous prime is 42601785601. The next prime is 42601785641. The reversal of 42601785623 is 32658710624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42601785623 - 2³⁴ = 25421916439 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42601785683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21300892811 + 21300892812.

It is an arithmetic number, because the mean of its divisors is an integer number (21300892812).

Almost surely, 2^42601785623 is an apocalyptic number.

42601785623 is a deficient number, since it is larger than the sum of its proper divisors (1).

42601785623 is an equidigital number, since it uses as much as digits as its factorization.

42601785623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 42601785623 in words is "forty-two billion, six hundred one million, seven hundred eighty-five thousand, six hundred twenty-three".