155330212052 has 12 divisors (see below), whose sum is σ = 275551541076. Its totient is φ = 76601200320.

The previous prime is 155330212021. The next prime is 155330212067. The reversal of 155330212052 is 250212033551.

It can be written as a sum of positive squares in 2 ways, for example, as 125816346436 + 29513865616 = 354706^2 + 171796^2 .

It is a super-2 number, since 2×155330212052² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 265976099 + ... + 265976682.

It is an arithmetic number, because the mean of its divisors is an integer number (22962628423).

Almost surely, 2^155330212052 is an apocalyptic number.

It is an amenable number.

155330212052 is a deficient number, since it is larger than the sum of its proper divisors (120221329024).

155330212052 is a wasteful number, since it uses less digits than its factorization.

155330212052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531952858 (or 531952856 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 155330212052 in words is "one hundred fifty-five billion, three hundred thirty million, two hundred twelve thousand, fifty-two".