3505159050849 has 21 divisors (see below), whose sum is σ = 5255410279939. Its totient is φ = 2336739000840.

The previous prime is 3505159050821. The next prime is 3505159050919. The reversal of 3505159050849 is 9480509515053.

The square root of 3505159050849 is 1872207.

It is a perfect power (a square), and thus also a powerful number.

3505159050849 is a `hidden beast` number, since 3 + 5 + 0 + 5 + 1 + 5 + 90 + 508 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 920845594449 + 2584313456400 = 959607^2 + 1607580^2 .

It is not a de Polignac number, because 3505159050849 - 2⁵ = 3505159050817 is a prime.

It is a super-2 number, since 2×3505159050849² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3505159050795 and 3505159050804.

It is not an unprimeable number, because it can be changed into a prime (3505159050649) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 50514919 + ... + 50584259.

Almost surely, 2^{3505159050849} is an apocalyptic number.

3505159050849 is the 1872207-th square number.

3505159050849 is the 936104-th centered octagonal number.

It is an amenable number.

3505159050849 is a deficient number, since it is larger than the sum of its proper divisors (1750251229090).

3505159050849 is an frugal number, since it uses more digits than its factorization.

3505159050849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138700 (or 69344 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 54.

The spelling of 3505159050849 in words is "three trillion, five hundred five billion, one hundred fifty-nine million, fifty thousand, eight hundred forty-nine".