87155055178 has 8 divisors (see below), whose sum is σ = 130739684868. Its totient is φ = 43575160224.

The previous prime is 87155055151. The next prime is 87155055203.

87155055178 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 87141268809 + 13786369 = 295197^2 + 3713^2 .

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

It is a super-2 number, since 2×87155055178² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137301 + ... + 1211512.

Almost surely, 2^87155055178 is an apocalyptic number.

87155055178 is a deficient number, since it is larger than the sum of its proper divisors (43584629690).

87155055178 is a wasteful number, since it uses less digits than its factorization.

87155055178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367368.

The product of its (nonzero) digits is 1960000, while the sum is 52.

The spelling of 87155055178 in words is "eighty-seven billion, one hundred fifty-five million, fifty-five thousand, one hundred seventy-eight".