3550749063221 has 2 divisors, whose sum is σ = 3550749063222. Its totient is φ = 3550749063220.

The previous prime is 3550749063209. The next prime is 3550749063233. The reversal of 3550749063221 is 1223609470553.

It is a balanced prime because it is at equal distance from previous prime (3550749063209) and next prime (3550749063233).

It can be written as a sum of positive squares in only one way, i.e., 2948861700625 + 601887362596 = 1717225^2 + 775814^2 .

It is a cyclic number.

It is not a de Polignac number, because 3550749063221 - 2¹⁰ = 3550749062197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3550749083221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1775374531610 + 1775374531611.

It is an arithmetic number, because the mean of its divisors is an integer number (1775374531611).

Almost surely, 2^{3550749063221} is an apocalyptic number.

It is an amenable number.

3550749063221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3550749063221 is an equidigital number, since it uses as much as digits as its factorization.

3550749063221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 3550749063221 in words is "three trillion, five hundred fifty billion, seven hundred forty-nine million, sixty-three thousand, two hundred twenty-one".