705082018509 has 12 divisors (see below), whose sum is σ = 1111038332352. Its totient is φ = 427322435400.

The previous prime is 705082018481. The next prime is 705082018567. The reversal of 705082018509 is 905810280507.

It is a happy number.

705082018509 is a `hidden beast` number, since 7 + 0 + 50 + 82 + 0 + 18 + 509 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-705082018509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705082018579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3561020197 + ... + 3561020394.

It is an arithmetic number, because the mean of its divisors is an integer number (92586527696).

Almost surely, 2^705082018509 is an apocalyptic number.

It is an amenable number.

705082018509 is a deficient number, since it is larger than the sum of its proper divisors (405956313843).

705082018509 is a wasteful number, since it uses less digits than its factorization.

705082018509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7122040608 (or 7122040605 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The spelling of 705082018509 in words is "seven hundred five billion, eighty-two million, eighteen thousand, five hundred nine".