3500185216705 has 8 divisors (see below), whose sum is σ = 4200256405800. Its totient is φ = 2800125409536.

The previous prime is 3500185216667. The next prime is 3500185216747. The reversal of 3500185216705 is 5076125810053.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 143506865329 + 3356678351376 = 378823^2 + 1832124^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3500185216705 - 2²⁹ = 3499648345793 is a prime.

It is a super-2 number, since 2×3500185216705² (a number of 26 digits) contains 22 as substring.

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, 2153640 + ... + 3411529.

It is an arithmetic number, because the mean of its divisors is an integer number (525032050725).

Almost surely, 2^{3500185216705} is an apocalyptic number.

It is an amenable number.

3500185216705 is a deficient number, since it is larger than the sum of its proper divisors (700071189095).

3500185216705 is a wasteful number, since it uses less digits than its factorization.

3500185216705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690963.

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 3500185216705 in words is "three trillion, five hundred billion, one hundred eighty-five million, two hundred sixteen thousand, seven hundred five".