155154846609 has 27 divisors (see below), whose sum is σ = 260716260987. Its totient is φ = 88655185584.

The previous prime is 155154846607. The next prime is 155154846709. The reversal of 155154846609 is 906648451551.

It is a happy number.

The square root of 155154846609 is 393897.

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

155154846609 is a `hidden beast` number, since 1 + 5 + 51 + 548 + 46 + 6 + 0 + 9 = 666.

155154846609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 93040250625 + 62114595984 = 305025^2 + 249228^2 .

It is not a de Polignac number, because 155154846609 - 2¹ = 155154846607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155154846601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8262459 + ... + 8281215.

Almost surely, 2^155154846609 is an apocalyptic number.

155154846609 is the 393897-th square number.

155154846609 is the 196949-th centered octagonal number.

It is an amenable number.

155154846609 is a deficient number, since it is larger than the sum of its proper divisors (105561414378).

155154846609 is an frugal number, since it uses more digits than its factorization.

155154846609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37534 (or 18767 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 155154846609 in words is "one hundred fifty-five billion, one hundred fifty-four million, eight hundred forty-six thousand, six hundred nine".