828889903505 has 16 divisors (see below), whose sum is σ = 1049309950080. Its totient is φ = 626836620672.

The previous prime is 828889903447. The next prime is 828889903537. The reversal of 828889903505 is 505309988828.

It is not a de Polignac number, because 828889903505 - 2⁶ = 828889903441 is a prime.

It is a super-2 number, since 2×828889903505² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 9502709 + ... + 9589538.

It is an arithmetic number, because the mean of its divisors is an integer number (65581871880).

Almost surely, 2^828889903505 is an apocalyptic number.

It is an amenable number.

828889903505 is a deficient number, since it is larger than the sum of its proper divisors (220420046575).

828889903505 is a wasteful number, since it uses less digits than its factorization.

828889903505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19092728.

The product of its (nonzero) digits is 49766400, while the sum is 65.

The spelling of 828889903505 in words is "eight hundred twenty-eight billion, eight hundred eighty-nine million, nine hundred three thousand, five hundred five".