155343343553 has 2 divisors, whose sum is σ = 155343343554. Its totient is φ = 155343343552.

The previous prime is 155343343541. The next prime is 155343343559. The reversal of 155343343553 is 355343343551.

155343343553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117671639089 + 37671704464 = 343033^2 + 194092^2 .

It is a cyclic number.

It is not a de Polignac number, because 155343343553 - 2⁶ = 155343343489 is a prime.

It is not a weakly prime, because it can be changed into another prime (155343343559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77671671776 + 77671671777.

It is an arithmetic number, because the mean of its divisors is an integer number (77671671777).

Almost surely, 2^155343343553 is an apocalyptic number.

It is an amenable number.

155343343553 is a deficient number, since it is larger than the sum of its proper divisors (1).

155343343553 is an equidigital number, since it uses as much as digits as its factorization.

155343343553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430000, while the sum is 44.

The spelling of 155343343553 in words is "one hundred fifty-five billion, three hundred forty-three million, three hundred forty-three thousand, five hundred fifty-three".