155109941533 has 2 divisors, whose sum is σ = 155109941534. Its totient is φ = 155109941532.

The previous prime is 155109941501. The next prime is 155109941557. The reversal of 155109941533 is 335149901551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110621429604 + 44488511929 = 332598^2 + 210923^2 .

It is a cyclic number.

It is not a de Polignac number, because 155109941533 - 2⁵ = 155109941501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155109941333) 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, 77554970766 + 77554970767.

It is an arithmetic number, because the mean of its divisors is an integer number (77554970767).

Almost surely, 2^155109941533 is an apocalyptic number.

It is an amenable number.

155109941533 is a deficient number, since it is larger than the sum of its proper divisors (1).

155109941533 is an equidigital number, since it uses as much as digits as its factorization.

155109941533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 364500, while the sum is 46.

The spelling of 155109941533 in words is "one hundred fifty-five billion, one hundred nine million, nine hundred forty-one thousand, five hundred thirty-three".