87536187081 has 16 divisors (see below), whose sum is σ = 148209417600. Its totient is φ = 50020678224.

The previous prime is 87536187077. The next prime is 87536187091. The reversal of 87536187081 is 18078163578.

It is a happy number.

It is not a de Polignac number, because 87536187081 - 2² = 87536187077 is a prime.

It is a super-2 number, since 2×87536187081² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87536187091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231577026 + ... + 231577403.

It is an arithmetic number, because the mean of its divisors is an integer number (9263088600).

Almost surely, 2^87536187081 is an apocalyptic number.

It is an amenable number.

87536187081 is a deficient number, since it is larger than the sum of its proper divisors (60673230519).

87536187081 is a wasteful number, since it uses less digits than its factorization.

87536187081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463154445 (or 463154439 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 87536187081 in words is "eighty-seven billion, five hundred thirty-six million, one hundred eighty-seven thousand, eighty-one".