87888932613 has 24 divisors (see below), whose sum is σ = 129179299392. Its totient is φ = 57570136128.

The previous prime is 87888932611. The next prime is 87888932617. The reversal of 87888932613 is 31623988878.

87888932613 is a `hidden beast` number, since 8 + 7 + 8 + 8 + 8 + 9 + 3 + 2 + 613 = 666.

It is not a de Polignac number, because 87888932613 - 2¹ = 87888932611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87888932611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81531 + ... + 427112.

It is an arithmetic number, because the mean of its divisors is an integer number (5382470808).

Almost surely, 2^87888932613 is an apocalyptic number.

It is an amenable number.

87888932613 is a deficient number, since it is larger than the sum of its proper divisors (41290366779).

87888932613 is a wasteful number, since it uses less digits than its factorization.

87888932613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508985 (or 508982 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The spelling of 87888932613 in words is "eighty-seven billion, eight hundred eighty-eight million, nine hundred thirty-two thousand, six hundred thirteen".