84395921955 has 16 divisors (see below), whose sum is σ = 135037560480. Its totient is φ = 45009796608.

The previous prime is 84395921903. The next prime is 84395921959. The reversal of 84395921955 is 55912959348.

It is not a de Polignac number, because 84395921955 - 2¹⁷ = 84395790883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84395921959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610731 + ... + 736059.

It is an arithmetic number, because the mean of its divisors is an integer number (8439847530).

Almost surely, 2^84395921955 is an apocalyptic number.

84395921955 is a deficient number, since it is larger than the sum of its proper divisors (50641638525).

84395921955 is a wasteful number, since it uses less digits than its factorization.

84395921955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170230.

The product of its digits is 17496000, while the sum is 60.

The spelling of 84395921955 in words is "eighty-four billion, three hundred ninety-five million, nine hundred twenty-one thousand, nine hundred fifty-five".