428861073187 has 2 divisors, whose sum is σ = 428861073188. Its totient is φ = 428861073186.

The previous prime is 428861073181. The next prime is 428861073211. The reversal of 428861073187 is 781370168824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428861073187 - 2¹⁹ = 428860548899 is a prime.

It is not a weakly prime, because it can be changed into another prime (428861073181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214430536593 + 214430536594.

It is an arithmetic number, because the mean of its divisors is an integer number (214430536594).

Almost surely, 2^428861073187 is an apocalyptic number.

428861073187 is a deficient number, since it is larger than the sum of its proper divisors (1).

428861073187 is an equidigital number, since it uses as much as digits as its factorization.

428861073187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The spelling of 428861073187 in words is "four hundred twenty-eight billion, eight hundred sixty-one million, seventy-three thousand, one hundred eighty-seven".