828770491886 has 4 divisors (see below), whose sum is σ = 1243155737832. Its totient is φ = 414385245942.

The previous prime is 828770491883. The next prime is 828770491909. The reversal of 828770491886 is 688194077828.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828770491883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207192622970 + ... + 207192622973.

It is an arithmetic number, because the mean of its divisors is an integer number (310788934458).

Almost surely, 2^828770491886 is an apocalyptic number.

828770491886 is a deficient number, since it is larger than the sum of its proper divisors (414385245946).

828770491886 is a wasteful number, since it uses less digits than its factorization.

828770491886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414385245945.

The product of its (nonzero) digits is 86704128, while the sum is 68.

The spelling of 828770491886 in words is "eight hundred twenty-eight billion, seven hundred seventy million, four hundred ninety-one thousand, eight hundred eighty-six".