428487732165 has 16 divisors (see below), whose sum is σ = 697200379200. Its totient is φ = 224653454592.

The previous prime is 428487732143. The next prime is 428487732181. The reversal of 428487732165 is 561237784824.

It is not a de Polignac number, because 428487732165 - 2⁵ = 428487732133 is a prime.

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, 242082580 + ... + 242084349.

It is an arithmetic number, because the mean of its divisors is an integer number (43575023700).

Almost surely, 2^428487732165 is an apocalyptic number.

It is an amenable number.

428487732165 is a deficient number, since it is larger than the sum of its proper divisors (268712647035).

428487732165 is a wasteful number, since it uses less digits than its factorization.

428487732165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484166996.

The product of its digits is 18063360, while the sum is 57.

The spelling of 428487732165 in words is "four hundred twenty-eight billion, four hundred eighty-seven million, seven hundred thirty-two thousand, one hundred sixty-five".