87668869995 has 64 divisors (see below), whose sum is σ = 178162145280. Its totient is φ = 40067913600.

The previous prime is 87668869979. The next prime is 87668869997. The reversal of 87668869995 is 59996886678.

It is a happy number.

It is not a de Polignac number, because 87668869995 - 2⁴ = 87668869979 is a prime.

It is a super-2 number, since 2×87668869995² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87668869997) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5644290 + ... + 5659800.

It is an arithmetic number, because the mean of its divisors is an integer number (2783783520).

Almost surely, 2^87668869995 is an apocalyptic number.

87668869995 is an abundant number, since it is smaller than the sum of its proper divisors (90493275285).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87668869995 is a wasteful number, since it uses less digits than its factorization.

87668869995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21513 (or 21507 counting only the distinct ones).

The product of its digits is 2821754880, while the sum is 81.

The spelling of 87668869995 in words is "eighty-seven billion, six hundred sixty-eight million, eight hundred sixty-nine thousand, nine hundred ninety-five".