828987371564 has 12 divisors (see below), whose sum is σ = 1582612254888. Its totient is φ = 376812441600.

The previous prime is 828987371539. The next prime is 828987371581. The reversal of 828987371564 is 465173789828.

It is a junction number, because it is equal to n+sod(n) for n = 828987371494 and 828987371503.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9420310997 + ... + 9420311084.

It is an arithmetic number, because the mean of its divisors is an integer number (131884354574).

Almost surely, 2^828987371564 is an apocalyptic number.

It is an amenable number.

828987371564 is a deficient number, since it is larger than the sum of its proper divisors (753624883324).

828987371564 is a wasteful number, since it uses less digits than its factorization.

828987371564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18840622096 (or 18840622094 counting only the distinct ones).

The product of its digits is 162570240, while the sum is 68.

The spelling of 828987371564 in words is "eight hundred twenty-eight billion, nine hundred eighty-seven million, three hundred seventy-one thousand, five hundred sixty-four".