87523105216845 has 32 divisors (see below), whose sum is σ = 143907925207680. Its totient is φ = 45390182319360.

The previous prime is 87523105216843. The next prime is 87523105216867. The reversal of 87523105216845 is 54861250132578.

It is not a de Polignac number, because 87523105216845 - 2¹ = 87523105216843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87523105216843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46317351 + ... + 48169940.

It is an arithmetic number, because the mean of its divisors is an integer number (4497122662740).

Almost surely, 2^{87523105216845} is an apocalyptic number.

It is an amenable number.

87523105216845 is a deficient number, since it is larger than the sum of its proper divisors (56384819990835).

87523105216845 is a wasteful number, since it uses less digits than its factorization.

87523105216845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94489005.

The product of its (nonzero) digits is 16128000, while the sum is 57.

The spelling of 87523105216845 in words is "eighty-seven trillion, five hundred twenty-three billion, one hundred five million, two hundred sixteen thousand, eight hundred forty-five".