87155268113 has 8 divisors (see below), whose sum is σ = 88901008488. Its totient is φ = 85413279744.

The previous prime is 87155268071. The next prime is 87155268133. The reversal of 87155268113 is 31186255178.

It can be written as a sum of positive squares in 4 ways, for example, as 13992050944 + 73163217169 = 118288^2 + 270487^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 87155268113 - 2²² = 87151073809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87155268133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891056 + ... + 984017.

It is an arithmetic number, because the mean of its divisors is an integer number (11112626061).

Almost surely, 2^87155268113 is an apocalyptic number.

It is an amenable number.

87155268113 is a deficient number, since it is larger than the sum of its proper divisors (1745740375).

87155268113 is a wasteful number, since it uses less digits than its factorization.

87155268113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876003.

The product of its digits is 403200, while the sum is 47.

The spelling of 87155268113 in words is "eighty-seven billion, one hundred fifty-five million, two hundred sixty-eight thousand, one hundred thirteen".