84064128774 has 16 divisors (see below), whose sum is σ = 168163836912. Its totient is φ = 28015446368.

The previous prime is 84064128773. The next prime is 84064128803. The reversal of 84064128774 is 47782146048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84064128773) 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, 1451709 + ... + 1508504.

It is an arithmetic number, because the mean of its divisors is an integer number (10510239807).

Almost surely, 2^84064128774 is an apocalyptic number.

84064128774 is an abundant number, since it is smaller than the sum of its proper divisors (84099708138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84064128774 is a wasteful number, since it uses less digits than its factorization.

84064128774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964951.

The product of its (nonzero) digits is 2408448, while the sum is 51.

The spelling of 84064128774 in words is "eighty-four billion, sixty-four million, one hundred twenty-eight thousand, seven hundred seventy-four".