3356143661 has 4 divisors (see below), whose sum is σ = 3614308572. Its totient is φ = 3097978752.

The previous prime is 3356143619. The next prime is 3356143691. The reversal of 3356143661 is 1663416533.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1663416533 = 587 ⋅2833759.

It can be written as a sum of positive squares in 2 ways, for example, as 1383096100 + 1973047561 = 37190^2 + 44419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3356143661 is a prime.

It is a super-2 number, since 2×3356143661² = 22527400546540965842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3356143691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129082436 + ... + 129082461.

It is an arithmetic number, because the mean of its divisors is an integer number (903577143).

Almost surely, 2^3356143661 is an apocalyptic number.

It is an amenable number.

3356143661 is a deficient number, since it is larger than the sum of its proper divisors (258164911).

3356143661 is a wasteful number, since it uses less digits than its factorization.

3356143661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258164910.

The product of its digits is 116640, while the sum is 38.

The square root of 3356143661 is about 57932.2333507004. The cubic root of 3356143661 is about 1497.2012495413.

The spelling of 3356143661 in words is "three billion, three hundred fifty-six million, one hundred forty-three thousand, six hundred sixty-one".