42599556478547 has 2 divisors, whose sum is σ = 42599556478548. Its totient is φ = 42599556478546.

The previous prime is 42599556478481. The next prime is 42599556478579. The reversal of 42599556478547 is 74587465599524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42599556478547 - 2¹⁴ = 42599556462163 is a prime.

It is not a weakly prime, because it can be changed into another prime (42599556475547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21299778239273 + 21299778239274.

It is an arithmetic number, because the mean of its divisors is an integer number (21299778239274).

Almost surely, 2^{42599556478547} is an apocalyptic number.

42599556478547 is a deficient number, since it is larger than the sum of its proper divisors (1).

42599556478547 is an equidigital number, since it uses as much as digits as its factorization.

42599556478547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15240960000, while the sum is 80.

The spelling of 42599556478547 in words is "forty-two trillion, five hundred ninety-nine billion, five hundred fifty-six million, four hundred seventy-eight thousand, five hundred forty-seven".