87516461578 has 32 divisors (see below), whose sum is σ = 165006503424. Its totient is φ = 33885257472.

The previous prime is 87516461471. The next prime is 87516461579.

87516461578 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (87516461579) 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, 5106975 + ... + 5124082.

It is an arithmetic number, because the mean of its divisors is an integer number (5156453232).

Almost surely, 2^87516461578 is an apocalyptic number.

87516461578 is a deficient number, since it is larger than the sum of its proper divisors (77490041846).

87516461578 is a wasteful number, since it uses less digits than its factorization.

87516461578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10231126.

The product of its digits is 11289600, while the sum is 58.

The spelling of 87516461578 in words is "eighty-seven billion, five hundred sixteen million, four hundred sixty-one thousand, five hundred seventy-eight".