84497910778 has 16 divisors (see below), whose sum is σ = 134738727840. Its totient is φ = 39629034000.

The previous prime is 84497910751. The next prime is 84497910779. The reversal of 84497910778 is 87701979448.

It is not an unprimeable number, because it can be changed into a prime (84497910779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11004228 + ... + 11011903.

It is an arithmetic number, because the mean of its divisors is an integer number (8421170490).

Almost surely, 2^84497910778 is an apocalyptic number.

84497910778 is a deficient number, since it is larger than the sum of its proper divisors (50240817062).

84497910778 is a wasteful number, since it uses less digits than its factorization.

84497910778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22016253.

The product of its (nonzero) digits is 28449792, while the sum is 64.

The spelling of 84497910778 in words is "eighty-four billion, four hundred ninety-seven million, nine hundred ten thousand, seven hundred seventy-eight".