7830700509865 has 8 divisors (see below), whose sum is σ = 9396879523848. Its totient is φ = 6264534466560.

The previous prime is 7830700509847. The next prime is 7830700509893. The reversal of 7830700509865 is 5689050070387.

It can be written as a sum of positive squares in 4 ways, for example, as 1287909489321 + 6542791020544 = 1134861^2 + 2557888^2 .

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

It is not a de Polignac number, because 7830700509865 - 2¹⁷ = 7830700378793 is a prime.

It is a super-2 number, since 2×7830700509865² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1860952 + ... + 4373161.

It is an arithmetic number, because the mean of its divisors is an integer number (1174609940481).

Almost surely, 2^{7830700509865} is an apocalyptic number.

It is an amenable number.

7830700509865 is a deficient number, since it is larger than the sum of its proper divisors (1566179013983).

7830700509865 is a wasteful number, since it uses less digits than its factorization.

7830700509865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485339.

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 7830700509865 in words is "seven trillion, eight hundred thirty billion, seven hundred million, five hundred nine thousand, eight hundred sixty-five".