155120466121417 has 2 divisors, whose sum is σ = 155120466121418. Its totient is φ = 155120466121416.

The previous prime is 155120466121363. The next prime is 155120466121463. The reversal of 155120466121417 is 714121664021551.

It is an a-pointer prime, because the next prime (155120466121463) can be obtained adding 155120466121417 to its sum of digits (46).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146581119770761 + 8539346350656 = 12107069^2 + 2922216^2 .

It is a cyclic number.

It is not a de Polignac number, because 155120466121417 - 2⁷ = 155120466121289 is a prime.

It is not a weakly prime, because it can be changed into another prime (155120466121477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77560233060708 + 77560233060709.

It is an arithmetic number, because the mean of its divisors is an integer number (77560233060709).

Almost surely, 2^{155120466121417} is an apocalyptic number.

It is an amenable number.

155120466121417 is a deficient number, since it is larger than the sum of its proper divisors (1).

155120466121417 is an equidigital number, since it uses as much as digits as its factorization.

155120466121417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 155120466121417 in words is "one hundred fifty-five trillion, one hundred twenty billion, four hundred sixty-six million, one hundred twenty-one thousand, four hundred seventeen".