1555212024349 has 2 divisors, whose sum is σ = 1555212024350. Its totient is φ = 1555212024348.

The previous prime is 1555212024347. The next prime is 1555212024439. The reversal of 1555212024349 is 9434202125551.

Together with next prime (1555212024439) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1060679591449 + 494532432900 = 1029893^2 + 703230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1555212024349 - 2¹ = 1555212024347 is a prime.

Together with 1555212024347, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1555212024347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777606012174 + 777606012175.

It is an arithmetic number, because the mean of its divisors is an integer number (777606012175).

Almost surely, 2^{1555212024349} is an apocalyptic number.

It is an amenable number.

1555212024349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1555212024349 is an equidigital number, since it uses as much as digits as its factorization.

1555212024349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432000, while the sum is 43.

It can be divided in two parts, 155521202 and 4349, that added together give a palindrome (155525551).

The spelling of 1555212024349 in words is "one trillion, five hundred fifty-five billion, two hundred twelve million, twenty-four thousand, three hundred forty-nine".