155343212029 has 2 divisors, whose sum is σ = 155343212030. Its totient is φ = 155343212028.

The previous prime is 155343211987. The next prime is 155343212033. The reversal of 155343212029 is 920212343551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116257131225 + 39086080804 = 340965^2 + 197702^2 .

It is a cyclic number.

It is not a de Polignac number, because 155343212029 - 2¹⁹ = 155342687741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155343212039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77671606014 + 77671606015.

It is an arithmetic number, because the mean of its divisors is an integer number (77671606015).

Almost surely, 2^155343212029 is an apocalyptic number.

It is an amenable number.

155343212029 is a deficient number, since it is larger than the sum of its proper divisors (1).

155343212029 is an equidigital number, since it uses as much as digits as its factorization.

155343212029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 155343212029 in words is "one hundred fifty-five billion, three hundred forty-three million, two hundred twelve thousand, twenty-nine".