87532541620 has 48 divisors (see below), whose sum is σ = 184627790928. Its totient is φ = 34859151360.

The previous prime is 87532541609. The next prime is 87532541623. The reversal of 87532541620 is 2614523578.

It can be written as a sum of positive squares in 8 ways, for example, as 695060496 + 86837481124 = 26364^2 + 294682^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87532541623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4657282 + ... + 4676038.

It is an arithmetic number, because the mean of its divisors is an integer number (3846412311).

Almost surely, 2^87532541620 is an apocalyptic number.

It is an amenable number.

87532541620 is an abundant number, since it is smaller than the sum of its proper divisors (97095249308).

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

87532541620 is a wasteful number, since it uses less digits than its factorization.

87532541620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19780 (or 19778 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 87532541620 in words is "eighty-seven billion, five hundred thirty-two million, five hundred forty-one thousand, six hundred twenty".