8519216540 has 24 divisors (see below), whose sum is σ = 17919565440. Its totient is φ = 3402122688.

The previous prime is 8519216501. The next prime is 8519216549. The reversal of 8519216540 is 456129158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8519216549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335180 + ... + 359699.

It is an arithmetic number, because the mean of its divisors is an integer number (746648560).

Almost surely, 2^8519216540 is an apocalyptic number.

It is an amenable number.

8519216540 is an abundant number, since it is smaller than the sum of its proper divisors (9400348900).

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

8519216540 is a wasteful number, since it uses less digits than its factorization.

8519216540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695501 (or 695499 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 8519216540 is about 92299.6020576470. The cubic root of 8519216540 is about 2042.3643402651.

The spelling of 8519216540 in words is "eight billion, five hundred nineteen million, two hundred sixteen thousand, five hundred forty".