828475655987 has 16 divisors (see below), whose sum is σ = 949117176000. Its totient is φ = 708406702080.

The previous prime is 828475655971. The next prime is 828475656007. The reversal of 828475655987 is 789556574828.

It is not a de Polignac number, because 828475655987 - 2⁴ = 828475655971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (828475655687) 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, 18927287 + ... + 18971007.

It is an arithmetic number, because the mean of its divisors is an integer number (59319823500).

Almost surely, 2^828475655987 is an apocalyptic number.

828475655987 is a deficient number, since it is larger than the sum of its proper divisors (120641520013).

828475655987 is a wasteful number, since it uses less digits than its factorization.

828475655987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50206.

The product of its digits is 1354752000, while the sum is 74.

The spelling of 828475655987 in words is "eight hundred twenty-eight billion, four hundred seventy-five million, six hundred fifty-five thousand, nine hundred eighty-seven".