428002056499 has 2 divisors, whose sum is σ = 428002056500. Its totient is φ = 428002056498.

The previous prime is 428002056479. The next prime is 428002056511. The reversal of 428002056499 is 994650200824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428002056499 - 2⁵ = 428002056467 is a prime.

It is not a weakly prime, because it can be changed into another prime (428002056409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214001028249 + 214001028250.

It is an arithmetic number, because the mean of its divisors is an integer number (214001028250).

Almost surely, 2^428002056499 is an apocalyptic number.

428002056499 is a deficient number, since it is larger than the sum of its proper divisors (1).

428002056499 is an equidigital number, since it uses as much as digits as its factorization.

428002056499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 428002056499 in words is "four hundred twenty-eight billion, two million, fifty-six thousand, four hundred ninety-nine".