84210875855 has 8 divisors (see below), whose sum is σ = 101065558464. Its totient is φ = 67360362400.

The previous prime is 84210875851. The next prime is 84210875893. The reversal of 84210875855 is 55857801248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84210875855 - 2² = 84210875851 is a prime.

It is a super-2 number, since 2×84210875855² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84210875797 and 84210875806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84210875851) 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, 997676 + ... + 1078785.

It is an arithmetic number, because the mean of its divisors is an integer number (12633194808).

Almost surely, 2^84210875855 is an apocalyptic number.

84210875855 is a deficient number, since it is larger than the sum of its proper divisors (16854682609).

84210875855 is a wasteful number, since it uses less digits than its factorization.

84210875855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084577.

The product of its (nonzero) digits is 3584000, while the sum is 53.

The spelling of 84210875855 in words is "eighty-four billion, two hundred ten million, eight hundred seventy-five thousand, eight hundred fifty-five".