500655605121 has 36 divisors (see below), whose sum is σ = 890722230372. Its totient is φ = 269260153344.

The previous prime is 500655605119. The next prime is 500655605137. The reversal of 500655605121 is 121506556005.

500655605121 is a `hidden beast` number, since 50 + 0 + 6 + 556 + 0 + 51 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 169691268096 + 330964337025 = 411936^2 + 575295^2 .

It is not a de Polignac number, because 500655605121 - 2¹ = 500655605119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (500655603121) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33382900 + ... + 33397893.

It is an arithmetic number, because the mean of its divisors is an integer number (24742284177).

Almost surely, 2^500655605121 is an apocalyptic number.

500655605121 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

500655605121 is a deficient number, since it is larger than the sum of its proper divisors (390066625251).

500655605121 is a wasteful number, since it uses less digits than its factorization.

500655605121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66780830 (or 66780820 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 500655605121 in words is "five hundred billion, six hundred fifty-five million, six hundred five thousand, one hundred twenty-one".