155013433202497 has 2 divisors, whose sum is σ = 155013433202498. Its totient is φ = 155013433202496.

The previous prime is 155013433202351. The next prime is 155013433202669. The reversal of 155013433202497 is 794202334310551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148685612456241 + 6327820746256 = 12193671^2 + 2515516^2 .

It is a cyclic number.

It is not a de Polignac number, because 155013433202497 - 2¹¹ = 155013433200449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155013433202497.

It is not a weakly prime, because it can be changed into another prime (155013433202197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77506716601248 + 77506716601249.

It is an arithmetic number, because the mean of its divisors is an integer number (77506716601249).

Almost surely, 2^{155013433202497} is an apocalyptic number.

It is an amenable number.

155013433202497 is a deficient number, since it is larger than the sum of its proper divisors (1).

155013433202497 is an equidigital number, since it uses as much as digits as its factorization.

155013433202497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 155013433202497 in words is "one hundred fifty-five trillion, thirteen billion, four hundred thirty-three million, two hundred two thousand, four hundred ninety-seven".