84778396635 has 16 divisors (see below), whose sum is σ = 141543062784. Its totient is φ = 43249268832.

The previous prime is 84778396609. The next prime is 84778396649. The reversal of 84778396635 is 53669387748.

It is not a de Polignac number, because 84778396635 - 2⁸ = 84778396379 is a prime.

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, 122866897 + ... + 122867586.

It is an arithmetic number, because the mean of its divisors is an integer number (8846441424).

Almost surely, 2^84778396635 is an apocalyptic number.

84778396635 is a deficient number, since it is larger than the sum of its proper divisors (56764666149).

84778396635 is a wasteful number, since it uses less digits than its factorization.

84778396635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245734514.

The product of its digits is 182891520, while the sum is 66.

The spelling of 84778396635 in words is "eighty-four billion, seven hundred seventy-eight million, three hundred ninety-six thousand, six hundred thirty-five".