87618942853 has 32 divisors (see below), whose sum is σ = 99572185440. Its totient is φ = 76525962240.

The previous prime is 87618942847. The next prime is 87618942857. The reversal of 87618942853 is 35824981678.

It can be written as a sum of positive squares in 16 ways, for example, as 5603720164 + 82015222689 = 74858^2 + 286383^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87618942853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87618942791 and 87618942800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87618942857) 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, 21197775 + ... + 21201907.

It is an arithmetic number, because the mean of its divisors is an integer number (3111630795).

Almost surely, 2^87618942853 is an apocalyptic number.

It is an amenable number.

87618942853 is a deficient number, since it is larger than the sum of its proper divisors (11953242587).

87618942853 is a wasteful number, since it uses less digits than its factorization.

87618942853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289.

The product of its digits is 23224320, while the sum is 61.

The spelling of 87618942853 in words is "eighty-seven billion, six hundred eighteen million, nine hundred forty-two thousand, eight hundred fifty-three".