153042215621 has 2 divisors, whose sum is σ = 153042215622. Its totient is φ = 153042215620.

The previous prime is 153042215581. The next prime is 153042215629. The reversal of 153042215621 is 126512240351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149359060900 + 3683154721 = 386470^2 + 60689^2 .

It is a cyclic number.

It is not a de Polignac number, because 153042215621 - 2¹⁴ = 153042199237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153042215629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76521107810 + 76521107811.

It is an arithmetic number, because the mean of its divisors is an integer number (76521107811).

Almost surely, 2^153042215621 is an apocalyptic number.

It is an amenable number.

153042215621 is a deficient number, since it is larger than the sum of its proper divisors (1).

153042215621 is an equidigital number, since it uses as much as digits as its factorization.

153042215621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 153042215621 its reverse (126512240351), we get a palindrome (279554455972).

The spelling of 153042215621 in words is "one hundred fifty-three billion, forty-two million, two hundred fifteen thousand, six hundred twenty-one".