84862778636 has 6 divisors (see below), whose sum is σ = 148509862620. Its totient is φ = 42431389316.

The previous prime is 84862778603. The next prime is 84862778647. The reversal of 84862778636 is 63687726848.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607847326 + ... + 10607847333.

It is an arithmetic number, because the mean of its divisors is an integer number (24751643770).

Almost surely, 2^84862778636 is an apocalyptic number.

It is an amenable number.

84862778636 is a deficient number, since it is larger than the sum of its proper divisors (63647083984).

84862778636 is a wasteful number, since it uses less digits than its factorization.

84862778636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21215694663 (or 21215694661 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 65.

The spelling of 84862778636 in words is "eighty-four billion, eight hundred sixty-two million, seven hundred seventy-eight thousand, six hundred thirty-six".