428887772851 has 2 divisors, whose sum is σ = 428887772852. Its totient is φ = 428887772850.

The previous prime is 428887772849. The next prime is 428887772899. The reversal of 428887772851 is 158277788824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428887772851 - 2¹ = 428887772849 is a prime.

Together with 428887772849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (428887772821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214443886425 + 214443886426.

It is an arithmetic number, because the mean of its divisors is an integer number (214443886426).

Almost surely, 2^428887772851 is an apocalyptic number.

428887772851 is a deficient number, since it is larger than the sum of its proper divisors (1).

428887772851 is an equidigital number, since it uses as much as digits as its factorization.

428887772851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112394240, while the sum is 67.

The spelling of 428887772851 in words is "four hundred twenty-eight billion, eight hundred eighty-seven million, seven hundred seventy-two thousand, eight hundred fifty-one".