428825553553 has 4 divisors (see below), whose sum is σ = 428894095140. Its totient is φ = 428757011968.

The previous prime is 428825553547. The next prime is 428825553557. The reversal of 428825553553 is 355355528824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 282203187984 + 146622365569 = 531228^2 + 382913^2 .

It is a cyclic number.

It is not a de Polignac number, because 428825553553 - 2⁹ = 428825553041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428825553494 and 428825553503.

It is not an unprimeable number, because it can be changed into a prime (428825553557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34261408 + ... + 34273921.

It is an arithmetic number, because the mean of its divisors is an integer number (107223523785).

Almost surely, 2^428825553553 is an apocalyptic number.

It is an amenable number.

428825553553 is a deficient number, since it is larger than the sum of its proper divisors (68541587).

428825553553 is an equidigital number, since it uses as much as digits as its factorization.

428825553553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68541586.

The product of its digits is 28800000, while the sum is 55.

The spelling of 428825553553 in words is "four hundred twenty-eight billion, eight hundred twenty-five million, five hundred fifty-three thousand, five hundred fifty-three".