828432918665 has 16 divisors (see below), whose sum is σ = 1084820014080. Its totient is φ = 602315550720.

The previous prime is 828432918661. The next prime is 828432918713. The reversal of 828432918665 is 566819234828.

It is a happy number.

It is not a de Polignac number, because 828432918665 - 2² = 828432918661 is a prime.

It is a super-2 number, since 2×828432918665² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 828432918598 and 828432918607.

It is not an unprimeable number, because it can be changed into a prime (828432918661) 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, 2079209 + ... + 2445398.

It is an arithmetic number, because the mean of its divisors is an integer number (67801250880).

Almost surely, 2^828432918665 is an apocalyptic number.

It is an amenable number.

828432918665 is a deficient number, since it is larger than the sum of its proper divisors (256387095415).

828432918665 is a wasteful number, since it uses less digits than its factorization.

828432918665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4527952.

The product of its digits is 39813120, while the sum is 62.

The spelling of 828432918665 in words is "eight hundred twenty-eight billion, four hundred thirty-two million, nine hundred eighteen thousand, six hundred sixty-five".