428247641815 has 16 divisors (see below), whose sum is σ = 588354259968. Its totient is φ = 293133921696.

The previous prime is 428247641779. The next prime is 428247641819. The reversal of 428247641815 is 518146742824.

It is not a de Polignac number, because 428247641815 - 2²⁷ = 428113424087 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 (428247641819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10846767 + ... + 10886176.

It is an arithmetic number, because the mean of its divisors is an integer number (36772141248).

Almost surely, 2^428247641815 is an apocalyptic number.

428247641815 is a deficient number, since it is larger than the sum of its proper divisors (160106618153).

428247641815 is a wasteful number, since it uses less digits than its factorization.

428247641815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21733518.

The product of its digits is 3440640, while the sum is 52.

The spelling of 428247641815 in words is "four hundred twenty-eight billion, two hundred forty-seven million, six hundred forty-one thousand, eight hundred fifteen".