428332685039 has 4 divisors (see below), whose sum is σ = 489523068624. Its totient is φ = 367142301456.

The previous prime is 428332685029. The next prime is 428332685057. The reversal of 428332685039 is 930586233824.

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

It is not a de Polignac number, because 428332685039 - 2²⁸ = 428064249583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428332685009) 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, 30595191782 + ... + 30595191795.

It is an arithmetic number, because the mean of its divisors is an integer number (122380767156).

Almost surely, 2^428332685039 is an apocalyptic number.

428332685039 is a deficient number, since it is larger than the sum of its proper divisors (61190383585).

428332685039 is an equidigital number, since it uses as much as digits as its factorization.

428332685039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61190383584.

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 428332685039 in words is "four hundred twenty-eight billion, three hundred thirty-two million, six hundred eighty-five thousand, thirty-nine".