42473519987 has 2 divisors, whose sum is σ = 42473519988. Its totient is φ = 42473519986.

The previous prime is 42473519953. The next prime is 42473520049. The reversal of 42473519987 is 78991537424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42473519987 - 2¹⁶ = 42473454451 is a prime.

It is not a weakly prime, because it can be changed into another prime (42473509987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21236759993 + 21236759994.

It is an arithmetic number, because the mean of its divisors is an integer number (21236759994).

Almost surely, 2^42473519987 is an apocalyptic number.

42473519987 is a deficient number, since it is larger than the sum of its proper divisors (1).

42473519987 is an equidigital number, since it uses as much as digits as its factorization.

42473519987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15240960, while the sum is 59.

The spelling of 42473519987 in words is "forty-two billion, four hundred seventy-three million, five hundred nineteen thousand, nine hundred eighty-seven".