87065394512 has 10 divisors (see below), whose sum is σ = 168689201898. Its totient is φ = 43532697248.

The previous prime is 87065394511. The next prime is 87065394517. The reversal of 87065394512 is 21549356078.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 75853973056 + 11211421456 = 275416^2 + 105884^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87065394511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2720793563 + ... + 2720793594.

It is a 1-persistent number, because it is pandigital, but 2⋅87065394512 = 174130789024 is not.

Almost surely, 2^87065394512 is an apocalyptic number.

It is an amenable number.

87065394512 is a deficient number, since it is larger than the sum of its proper divisors (81623807386).

87065394512 is a wasteful number, since it uses less digits than its factorization.

87065394512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441587165 (or 5441587159 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 87065394512 in words is "eighty-seven billion, sixty-five million, three hundred ninety-four thousand, five hundred twelve".