84452975655921 has 24 divisors (see below), whose sum is σ = 122737047280640. Its totient is φ = 55956105338976.

The previous prime is 84452975655913. The next prime is 84452975656013. The reversal of 84452975655921 is 12955657925448.

84452975655921 is a `hidden beast` number, since 8 + 4 + 4 + 5 + 2 + 9 + 7 + 565 + 59 + 2 + 1 = 666.

It is not a de Polignac number, because 84452975655921 - 2³ = 84452975655913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84452975655921.

It is not an unprimeable number, because it can be changed into a prime (84452975655911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328944720 + ... + 329201358.

Almost surely, 2^{84452975655921} is an apocalyptic number.

It is an amenable number.

84452975655921 is a deficient number, since it is larger than the sum of its proper divisors (38284071624719).

84452975655921 is a wasteful number, since it uses less digits than its factorization.

84452975655921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481125 (or 481122 counting only the distinct ones).

The product of its digits is 1088640000, while the sum is 72.

The spelling of 84452975655921 in words is "eighty-four trillion, four hundred fifty-two billion, nine hundred seventy-five million, six hundred fifty-five thousand, nine hundred twenty-one".