428672823851 has 2 divisors, whose sum is σ = 428672823852. Its totient is φ = 428672823850.

The previous prime is 428672823841. The next prime is 428672823893. The reversal of 428672823851 is 158328276824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428672823851 - 2²⁶ = 428605714987 is a prime.

It is not a weakly prime, because it can be changed into another prime (428672823841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214336411925 + 214336411926.

It is an arithmetic number, because the mean of its divisors is an integer number (214336411926).

Almost surely, 2^428672823851 is an apocalyptic number.

428672823851 is a deficient number, since it is larger than the sum of its proper divisors (1).

428672823851 is an equidigital number, since it uses as much as digits as its factorization.

428672823851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10321920, while the sum is 56.

The spelling of 428672823851 in words is "four hundred twenty-eight billion, six hundred seventy-two million, eight hundred twenty-three thousand, eight hundred fifty-one".