155213148841 has 9 divisors (see below), whose sum is σ = 156235859031. Its totient is φ = 154197097632.

The previous prime is 155213148833. The next prime is 155213148869. The reversal of 155213148841 is 148841312551.

The square root of 155213148841 is 393971.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 151130450025 + 4082698816 = 388755^2 + 63896^2 .

It is not a de Polignac number, because 155213148841 - 2³ = 155213148833 is a prime.

It is a super-2 number, since 2×155213148841² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155213148821) 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 in 8 ways as a sum of consecutive naturals, for example, 64216065 + ... + 64218481.

Almost surely, 2^155213148841 is an apocalyptic number.

155213148841 is the 393971-st square number.

155213148841 is the 196986-th centered octagonal number.

It is an amenable number.

155213148841 is a deficient number, since it is larger than the sum of its proper divisors (1022710190).

155213148841 is an frugal number, since it uses more digits than its factorization.

155213148841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160 (or 2580 counting only the distinct ones).

The product of its digits is 153600, while the sum is 43.

The spelling of 155213148841 in words is "one hundred fifty-five billion, two hundred thirteen million, one hundred forty-eight thousand, eight hundred forty-one".