155720166510119 has 2 divisors, whose sum is σ = 155720166510120. Its totient is φ = 155720166510118.

The previous prime is 155720166510047. The next prime is 155720166510169. The reversal of 155720166510119 is 911015661027551.

It is an a-pointer prime, because the next prime (155720166510169) can be obtained adding 155720166510119 to its sum of digits (50).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155720166510119 is a prime.

It is a super-2 number, since 2×155720166510119² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155720166510169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77860083255059 + 77860083255060.

It is an arithmetic number, because the mean of its divisors is an integer number (77860083255060).

Almost surely, 2^{155720166510119} is an apocalyptic number.

155720166510119 is a deficient number, since it is larger than the sum of its proper divisors (1).

155720166510119 is an equidigital number, since it uses as much as digits as its factorization.

155720166510119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567000, while the sum is 50.

The spelling of 155720166510119 in words is "one hundred fifty-five trillion, seven hundred twenty billion, one hundred sixty-six million, five hundred ten thousand, one hundred nineteen".