428837238365 has 16 divisors (see below), whose sum is σ = 515177829936. Its totient is φ = 342687859200.

The previous prime is 428837238343. The next prime is 428837238407. The reversal of 428837238365 is 563832738824.

It can be written as a sum of positive squares in 8 ways, for example, as 62127058009 + 366710180356 = 249253^2 + 605566^2 .

It is not a de Polignac number, because 428837238365 - 2³⁶ = 360117761629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29996159 + ... + 30010451.

It is an arithmetic number, because the mean of its divisors is an integer number (32198614371).

Almost surely, 2^428837238365 is an apocalyptic number.

It is an amenable number.

428837238365 is a deficient number, since it is larger than the sum of its proper divisors (86340591571).

428837238365 is a wasteful number, since it uses less digits than its factorization.

428837238365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20560.

The product of its digits is 46448640, while the sum is 59.

The spelling of 428837238365 in words is "four hundred twenty-eight billion, eight hundred thirty-seven million, two hundred thirty-eight thousand, three hundred sixty-five".