42745301887 has 2 divisors, whose sum is σ = 42745301888. Its totient is φ = 42745301886.

The previous prime is 42745301869. The next prime is 42745301933. The reversal of 42745301887 is 78810354724.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42745301887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42745301887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42745301867) 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, 21372650943 + 21372650944.

It is an arithmetic number, because the mean of its divisors is an integer number (21372650944).

Almost surely, 2^42745301887 is an apocalyptic number.

42745301887 is a deficient number, since it is larger than the sum of its proper divisors (1).

42745301887 is an equidigital number, since it uses as much as digits as its factorization.

42745301887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 42745301887 in words is "forty-two billion, seven hundred forty-five million, three hundred one thousand, eight hundred eighty-seven".