3509557336666 has 8 divisors (see below), whose sum is σ = 5265584378100. Its totient is φ = 1754362543968.

The previous prime is 3509557336609. The next prime is 3509557336709. The reversal of 3509557336666 is 6666337559053.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3086595710641 + 422961626025 = 1756871^2 + 650355^2 .

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

It is a super-2 number, since 2×3509557336666² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3509557336598 and 3509557336607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208051641 + ... + 208068508.

Almost surely, 2^{3509557336666} is an apocalyptic number.

3509557336666 is a deficient number, since it is larger than the sum of its proper divisors (1756027041434).

3509557336666 is a wasteful number, since it uses less digits than its factorization.

3509557336666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416124368.

The product of its (nonzero) digits is 275562000, while the sum is 64.

The spelling of 3509557336666 in words is "three trillion, five hundred nine billion, five hundred fifty-seven million, three hundred thirty-six thousand, six hundred sixty-six".