87133939617 has 16 divisors (see below), whose sum is σ = 119362653632. Its totient is φ = 56498420160.

The previous prime is 87133939591. The next prime is 87133939649. The reversal of 87133939617 is 71693933178.

It is a de Polignac number, because none of the positive numbers 2^k-87133939617 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87133939687) 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 15 ways as a sum of consecutive naturals, for example, 159423 + ... + 446859.

It is an arithmetic number, because the mean of its divisors is an integer number (7460165852).

Almost surely, 2^87133939617 is an apocalyptic number.

It is an amenable number.

87133939617 is a deficient number, since it is larger than the sum of its proper divisors (32228714015).

87133939617 is a wasteful number, since it uses less digits than its factorization.

87133939617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290208.

The product of its digits is 5143824, while the sum is 57.

The spelling of 87133939617 in words is "eighty-seven billion, one hundred thirty-three million, nine hundred thirty-nine thousand, six hundred seventeen".