155066370533 has 2 divisors, whose sum is σ = 155066370534. Its totient is φ = 155066370532.

The previous prime is 155066370479. The next prime is 155066370541. The reversal of 155066370533 is 335073660551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148466107969 + 6600262564 = 385313^2 + 81242^2 .

It is a cyclic number.

It is not a de Polignac number, because 155066370533 - 2¹² = 155066366437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155066372533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77533185266 + 77533185267.

It is an arithmetic number, because the mean of its divisors is an integer number (77533185267).

Almost surely, 2^155066370533 is an apocalyptic number.

It is an amenable number.

155066370533 is a deficient number, since it is larger than the sum of its proper divisors (1).

155066370533 is an equidigital number, since it uses as much as digits as its factorization.

155066370533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 850500, while the sum is 44.

The spelling of 155066370533 in words is "one hundred fifty-five billion, sixty-six million, three hundred seventy thousand, five hundred thirty-three".