3521306771661 has 8 divisors (see below), whose sum is σ = 5365800794944. Its totient is φ = 2012175298080.

The previous prime is 3521306771641. The next prime is 3521306771753. The reversal of 3521306771661 is 1661776031253.

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

It is not a de Polignac number, because 3521306771661 - 2¹⁴ = 3521306755277 is a prime.

It is a super-3 number, since 3×3521306771661³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3521306771661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521306771621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83840637400 + ... + 83840637441.

It is an arithmetic number, because the mean of its divisors is an integer number (670725099368).

Almost surely, 2^{3521306771661} is an apocalyptic number.

It is an amenable number.

3521306771661 is a deficient number, since it is larger than the sum of its proper divisors (1844494023283).

3521306771661 is a wasteful number, since it uses less digits than its factorization.

3521306771661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167681274851.

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 3521306771661 in words is "three trillion, five hundred twenty-one billion, three hundred six million, seven hundred seventy-one thousand, six hundred sixty-one".