428019918709 has 24 divisors (see below), whose sum is σ = 474785785728. Its totient is φ = 385052448000.

The previous prime is 428019918701. The next prime is 428019918713. The reversal of 428019918709 is 907819910824.

It is not a de Polignac number, because 428019918709 - 2³ = 428019918701 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 (428019918701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9595959 + ... + 9640459.

It is an arithmetic number, because the mean of its divisors is an integer number (19782741072).

Almost surely, 2^428019918709 is an apocalyptic number.

It is an amenable number.

428019918709 is a deficient number, since it is larger than the sum of its proper divisors (46765867019).

428019918709 is a wasteful number, since it uses less digits than its factorization.

428019918709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46005 (or 45988 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 58.

The spelling of 428019918709 in words is "four hundred twenty-eight billion, nineteen million, nine hundred eighteen thousand, seven hundred nine".