3540842550121 has 2 divisors, whose sum is σ = 3540842550122. Its totient is φ = 3540842550120.

The previous prime is 3540842550029. The next prime is 3540842550151. The reversal of 3540842550121 is 1210552480453.

It is a happy number.

3540842550121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2885714190121 + 655128360000 = 1698739^2 + 809400^2 .

It is a cyclic number.

It is not a de Polignac number, because 3540842550121 - 2¹⁵ = 3540842517353 is a prime.

It is a super-2 number, since 2×3540842550121² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3540842550151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1770421275060 + 1770421275061.

It is an arithmetic number, because the mean of its divisors is an integer number (1770421275061).

Almost surely, 2^{3540842550121} is an apocalyptic number.

It is an amenable number.

3540842550121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3540842550121 is an equidigital number, since it uses as much as digits as its factorization.

3540842550121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192000, while the sum is 40.

The spelling of 3540842550121 in words is "three trillion, five hundred forty billion, eight hundred forty-two million, five hundred fifty thousand, one hundred twenty-one".