428861138399 has 2 divisors, whose sum is σ = 428861138400. Its totient is φ = 428861138398.

The previous prime is 428861138351. The next prime is 428861138441. The reversal of 428861138399 is 993831168824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428861138399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428861138999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214430569199 + 214430569200.

It is an arithmetic number, because the mean of its divisors is an integer number (214430569200).

Almost surely, 2^428861138399 is an apocalyptic number.

428861138399 is a deficient number, since it is larger than the sum of its proper divisors (1).

428861138399 is an equidigital number, since it uses as much as digits as its factorization.

428861138399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17915904, while the sum is 62.

The spelling of 428861138399 in words is "four hundred twenty-eight billion, eight hundred sixty-one million, one hundred thirty-eight thousand, three hundred ninety-nine".