87101641877 has 4 divisors (see below), whose sum is σ = 87318853356. Its totient is φ = 86884430400.

The previous prime is 87101641871. The next prime is 87101641889. The reversal of 87101641877 is 77814610178.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60197113201 + 26904528676 = 245351^2 + 164026^2 .

It is a cyclic number.

It is not a de Polignac number, because 87101641877 - 2⁸ = 87101641621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87101641871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108605138 + ... + 108605939.

It is an arithmetic number, because the mean of its divisors is an integer number (21829713339).

Almost surely, 2^87101641877 is an apocalyptic number.

It is an amenable number.

87101641877 is a deficient number, since it is larger than the sum of its proper divisors (217211479).

87101641877 is a wasteful number, since it uses less digits than its factorization.

87101641877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217211478.

The product of its (nonzero) digits is 526848, while the sum is 50.

The spelling of 87101641877 in words is "eighty-seven billion, one hundred one million, six hundred forty-one thousand, eight hundred seventy-seven".