3553749049321 has 9 divisors (see below), whose sum is σ = 3642619147383. Its totient is φ = 3466996837680.

The previous prime is 3553749049307. The next prime is 3553749049373. The reversal of 3553749049321 is 1239409473553.

The square root of 3553749049321 is 1885139.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 171239543721 + 3382509505600 = 413811^2 + 1839160^2 .

It is not a de Polignac number, because 3553749049321 - 2¹¹ = 3553749047273 is a prime.

It is a super-2 number, since 2×3553749049321² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3553749049391) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 77267710 + ... + 77313688.

Almost surely, 2^{3553749049321} is an apocalyptic number.

3553749049321 is the 1885139-th square number.

3553749049321 is the 942570-th centered octagonal number.

It is an amenable number.

3553749049321 is a deficient number, since it is larger than the sum of its proper divisors (88870098062).

3553749049321 is an frugal number, since it uses more digits than its factorization.

3553749049321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92040 (or 46020 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 55.

The spelling of 3553749049321 in words is "three trillion, five hundred fifty-three billion, seven hundred forty-nine million, forty-nine thousand, three hundred twenty-one".