87205051530 has 24 divisors (see below), whose sum is σ = 226733134212. Its totient is φ = 23254680384.

The previous prime is 87205051529. The next prime is 87205051537. The reversal of 87205051530 is 3515050278.

87205051530 is a `hidden beast` number, since 8 + 7 + 20 + 50 + 51 + 530 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77388006969 + 9817044561 = 278187^2 + 99081^2 .

It is not an unprimeable number, because it can be changed into a prime (87205051537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484472419 + ... + 484472598.

Almost surely, 2^87205051530 is an apocalyptic number.

87205051530 is an abundant number, since it is smaller than the sum of its proper divisors (139528082682).

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

87205051530 is a wasteful number, since it uses less digits than its factorization.

87205051530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968945030 (or 968945027 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 87205051530 in words is "eighty-seven billion, two hundred five million, fifty-one thousand, five hundred thirty".