84728134855 has 16 divisors (see below), whose sum is σ = 125136938304. Its totient is φ = 53630115840.

The previous prime is 84728134849. The next prime is 84728134889. The reversal of 84728134855 is 55843182748.

It is not a de Polignac number, because 84728134855 - 2³ = 84728134847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84728134796 and 84728134805.

It is a congruent number.

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, 93107386 + ... + 93108295.

It is an arithmetic number, because the mean of its divisors is an integer number (7821058644).

Almost surely, 2^84728134855 is an apocalyptic number.

84728134855 is a deficient number, since it is larger than the sum of its proper divisors (40408803449).

84728134855 is a wasteful number, since it uses less digits than its factorization.

84728134855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186215706.

The product of its digits is 8601600, while the sum is 55.

The spelling of 84728134855 in words is "eighty-four billion, seven hundred twenty-eight million, one hundred thirty-four thousand, eight hundred fifty-five".