84345556563 has 12 divisors (see below), whose sum is σ = 122266041768. Its totient is φ = 56030261280.

The previous prime is 84345556513. The next prime is 84345556579. The reversal of 84345556563 is 36565554348.

84345556563 is a `hidden beast` number, since 8 + 4 + 34 + 5 + 556 + 56 + 3 = 666.

It is not a de Polignac number, because 84345556563 - 2¹⁷ = 84345425491 is a prime.

It is a super-2 number, since 2×84345556563² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84345556513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16673145 + ... + 16678202.

It is an arithmetic number, because the mean of its divisors is an integer number (10188836814).

Almost surely, 2^84345556563 is an apocalyptic number.

84345556563 is a deficient number, since it is larger than the sum of its proper divisors (37920485205).

84345556563 is a wasteful number, since it uses less digits than its factorization.

84345556563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33351634 (or 33351631 counting only the distinct ones).

The product of its digits is 25920000, while the sum is 54.

The spelling of 84345556563 in words is "eighty-four billion, three hundred forty-five million, five hundred fifty-six thousand, five hundred sixty-three".