827520785604 has 36 divisors (see below), whose sum is σ = 2091830389740. Its totient is φ = 275834758080.

The previous prime is 827520785603. The next prime is 827520785627. The reversal of 827520785604 is 406587025728.

827520785604 is a `hidden beast` number, since 8 + 2 + 7 + 5 + 2 + 0 + 78 + 560 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 610273440000 + 217247345604 = 781200^2 + 466098^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×827520785604² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (827520785603) 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, 1860994 + ... + 2262374.

It is an arithmetic number, because the mean of its divisors is an integer number (58106399715).

Almost surely, 2^827520785604 is an apocalyptic number.

It is an amenable number.

827520785604 is an abundant number, since it is smaller than the sum of its proper divisors (1264309604136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

827520785604 is a wasteful number, since it uses less digits than its factorization.

827520785604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458660 (or 458655 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 54.

The spelling of 827520785604 in words is "eight hundred twenty-seven billion, five hundred twenty million, seven hundred eighty-five thousand, six hundred four".