867485752205553 has 80 divisors (see below), whose sum is σ = 1419370365483840. Its totient is φ = 524729948985216.

The previous prime is 867485752205543. The next prime is 867485752205561. The reversal of 867485752205553 is 355502257584768.

867485752205553 is a `hidden beast` number, since 8 + 6 + 7 + 48 + 5 + 7 + 5 + 2 + 20 + 5 + 553 = 666.

It is not a de Polignac number, because 867485752205553 - 2¹⁷ = 867485752074481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (867485752205543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 551710350 + ... + 553280472.

It is an arithmetic number, because the mean of its divisors is an integer number (17742129568548).

Almost surely, 2^{867485752205553} is an apocalyptic number.

It is an amenable number.

867485752205553 is a deficient number, since it is larger than the sum of its proper divisors (551884613278287).

867485752205553 is a wasteful number, since it uses less digits than its factorization.

867485752205553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579100 (or 1579091 counting only the distinct ones).

The product of its (nonzero) digits is 2822400000, while the sum is 72.

The spelling of 867485752205553 in words is "eight hundred sixty-seven trillion, four hundred eighty-five billion, seven hundred fifty-two million, two hundred five thousand, five hundred fifty-three".