87537473578 has 8 divisors (see below), whose sum is σ = 131609459268. Its totient is φ = 43667653824.

The previous prime is 87537473563. The next prime is 87537473579.

87537473578 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 79255199529 + 8282274049 = 281523^2 + 91007^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (87537473579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50540401 + ... + 50542132.

Almost surely, 2^87537473578 is an apocalyptic number.

87537473578 is a deficient number, since it is larger than the sum of its proper divisors (44071985690).

87537473578 is a wasteful number, since it uses less digits than its factorization.

87537473578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101082968.

The product of its digits is 138297600, while the sum is 64.

The spelling of 87537473578 in words is "eighty-seven billion, five hundred thirty-seven million, four hundred seventy-three thousand, five hundred seventy-eight".