8500515378 has 8 divisors (see below), whose sum is σ = 17001030768. Its totient is φ = 2833505124.

The previous prime is 8500515377. The next prime is 8500515391. The reversal of 8500515378 is 8735150058.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

8500515378 is an admirable number.

It is a super-2 number, since 2×8500515378² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8500515377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708376276 + ... + 708376287.

It is an arithmetic number, because the mean of its divisors is an integer number (2125128846).

Almost surely, 2^8500515378 is an apocalyptic number.

8500515378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8500515378 is a wasteful number, since it uses less digits than its factorization.

8500515378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416752568.

The product of its (nonzero) digits is 168000, while the sum is 42.

The square root of 8500515378 is about 92198.2395601998. The cubic root of 8500515378 is about 2040.8687970906.

The spelling of 8500515378 in words is "eight billion, five hundred million, five hundred fifteen thousand, three hundred seventy-eight".