3355945138666 has 4 divisors (see below), whose sum is σ = 5033917708002. Its totient is φ = 1677972569332.

The previous prime is 3355945138643. The next prime is 3355945138717. The reversal of 3355945138666 is 6668315495533.

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

It can be written as a sum of positive squares in only one way, i.e., 1989101226025 + 1366843912641 = 1410355^2 + 1169121^2 .

It is a super-2 number, since 2×3355945138666² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3355945138598 and 3355945138607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838986284665 + ... + 838986284668.

Almost surely, 2^{3355945138666} is an apocalyptic number.

3355945138666 is a deficient number, since it is larger than the sum of its proper divisors (1677972569336).

3355945138666 is a wasteful number, since it uses less digits than its factorization.

3355945138666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677972569335.

The product of its digits is 209952000, while the sum is 64.

The spelling of 3355945138666 in words is "three trillion, three hundred fifty-five billion, nine hundred forty-five million, one hundred thirty-eight thousand, six hundred sixty-six".