428019415917 has 16 divisors (see below), whose sum is σ = 604331842752. Its totient is φ = 268530474240.

The previous prime is 428019415913. The next prime is 428019415919. The reversal of 428019415917 is 719514910824.

It is not a de Polignac number, because 428019415917 - 2² = 428019415913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 428019415917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428019415913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25843 + ... + 925584.

It is an arithmetic number, because the mean of its divisors is an integer number (37770740172).

Almost surely, 2^428019415917 is an apocalyptic number.

It is an amenable number.

428019415917 is a deficient number, since it is larger than the sum of its proper divisors (176312426835).

428019415917 is a wasteful number, since it uses less digits than its factorization.

428019415917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960268.

The product of its (nonzero) digits is 725760, while the sum is 51.

The spelling of 428019415917 in words is "four hundred twenty-eight billion, nineteen million, four hundred fifteen thousand, nine hundred seventeen".