7009581837985 has 4 divisors (see below), whose sum is σ = 8411498205588. Its totient is φ = 5607665470384.

The previous prime is 7009581837977. The next prime is 7009581838001. The reversal of 7009581837985 is 5897381859007.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5395139689536 + 1614442148449 = 2322744^2 + 1270607^2 .

It is a cyclic number.

It is not a de Polignac number, because 7009581837985 - 2³ = 7009581837977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700958183794 + ... + 700958183803.

It is an arithmetic number, because the mean of its divisors is an integer number (2102874551397).

Almost surely, 2^{7009581837985} is an apocalyptic number.

It is an amenable number.

7009581837985 is a deficient number, since it is larger than the sum of its proper divisors (1401916367603).

7009581837985 is a wasteful number, since it uses less digits than its factorization.

7009581837985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401916367602.

The product of its (nonzero) digits is 152409600, while the sum is 70.

The spelling of 7009581837985 in words is "seven trillion, nine billion, five hundred eighty-one million, eight hundred thirty-seven thousand, nine hundred eighty-five".