87117889552 has 10 divisors (see below), whose sum is σ = 168790911038. Its totient is φ = 43558944768.

The previous prime is 87117889543. The next prime is 87117889561. The reversal of 87117889552 is 25598871178.

It is an interprime number because it is at equal distance from previous prime (87117889543) and next prime (87117889561).

It can be written as a sum of positive squares in only one way, i.e., 81238680576 + 5879208976 = 285024^2 + 76676^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2722434033 + ... + 2722434064.

Almost surely, 2^87117889552 is an apocalyptic number.

It is an amenable number.

87117889552 is a deficient number, since it is larger than the sum of its proper divisors (81673021486).

87117889552 is a wasteful number, since it uses less digits than its factorization.

87117889552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5444868105 (or 5444868099 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 61.

The spelling of 87117889552 in words is "eighty-seven billion, one hundred seventeen million, eight hundred eighty-nine thousand, five hundred fifty-two".