8509916440936 has 8 divisors (see below), whose sum is σ = 15956093326770. Its totient is φ = 4254958220464.

The previous prime is 8509916440891. The next prime is 8509916440967. The reversal of 8509916440936 is 6390446199058.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7388448148900 + 1121468292036 = 2718170^2 + 1058994^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531869777551 + ... + 531869777566.

Almost surely, 2^{8509916440936} is an apocalyptic number.

It is an amenable number.

8509916440936 is a deficient number, since it is larger than the sum of its proper divisors (7446176885834).

8509916440936 is a wasteful number, since it uses less digits than its factorization.

8509916440936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063739555123 (or 1063739555119 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 64.

It can be divided in two parts, 850991 and 6440936, that added together give a palindrome (7291927).

The spelling of 8509916440936 in words is "eight trillion, five hundred nine billion, nine hundred sixteen million, four hundred forty thousand, nine hundred thirty-six".