84700777778 has 16 divisors (see below), whose sum is σ = 128383424064. Its totient is φ = 41907197520.

The previous prime is 84700777769. The next prime is 84700777783. The reversal of 84700777778 is 87777700748.

It is a self number, because there is not a number n which added to its sum of digits gives 84700777778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33293 + ... + 412928.

It is an arithmetic number, because the mean of its divisors is an integer number (8023964004).

Almost surely, 2^84700777778 is an apocalyptic number.

84700777778 is a deficient number, since it is larger than the sum of its proper divisors (43682646286).

84700777778 is a wasteful number, since it uses less digits than its factorization.

84700777778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447217.

The product of its (nonzero) digits is 30118144, while the sum is 62.

The spelling of 84700777778 in words is "eighty-four billion, seven hundred million, seven hundred seventy-seven thousand, seven hundred seventy-eight".