153120280721 has 2 divisors, whose sum is σ = 153120280722. Its totient is φ = 153120280720.

The previous prime is 153120280699. The next prime is 153120280739. The reversal of 153120280721 is 127082021351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149181337600 + 3938943121 = 386240^2 + 62761^2 .

It is an emirp because it is prime and its reverse (127082021351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 153120280721 - 2¹⁴ = 153120264337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (153120280741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76560140360 + 76560140361.

It is an arithmetic number, because the mean of its divisors is an integer number (76560140361).

Almost surely, 2^153120280721 is an apocalyptic number.

It is an amenable number.

153120280721 is a deficient number, since it is larger than the sum of its proper divisors (1).

153120280721 is an equidigital number, since it uses as much as digits as its factorization.

153120280721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 153120280721 in words is "one hundred fifty-three billion, one hundred twenty million, two hundred eighty thousand, seven hundred twenty-one".