3553523740621 has 2 divisors, whose sum is σ = 3553523740622. Its totient is φ = 3553523740620.

The previous prime is 3553523740619. The next prime is 3553523740631. The reversal of 3553523740621 is 1260473253553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3552942255625 + 581484996 = 1884925^2 + 24114^2 .

It is a cyclic number.

It is not a de Polignac number, because 3553523740621 - 2¹ = 3553523740619 is a prime.

Together with 3553523740619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3553523740631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1776761870310 + 1776761870311.

It is an arithmetic number, because the mean of its divisors is an integer number (1776761870311).

Almost surely, 2^{3553523740621} is an apocalyptic number.

It is an amenable number.

3553523740621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3553523740621 is an equidigital number, since it uses as much as digits as its factorization.

3553523740621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268000, while the sum is 46.

The spelling of 3553523740621 in words is "three trillion, five hundred fifty-three billion, five hundred twenty-three million, seven hundred forty thousand, six hundred twenty-one".