87557875578 has 24 divisors (see below), whose sum is σ = 189715084416. Its totient is φ = 29184981000.

The previous prime is 87557875571. The next prime is 87557875583.

87557875578 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (87557875571) 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, 646903 + ... + 770453.

It is an arithmetic number, because the mean of its divisors is an integer number (7904795184).

Almost surely, 2^87557875578 is an apocalyptic number.

87557875578 is an abundant number, since it is smaller than the sum of its proper divisors (102157208838).

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

87557875578 is a wasteful number, since it uses less digits than its factorization.

87557875578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162930 (or 162927 counting only the distinct ones).

The product of its digits is 768320000, while the sum is 72.

The spelling of 87557875578 in words is "eighty-seven billion, five hundred fifty-seven million, eight hundred seventy-five thousand, five hundred seventy-eight".