155341936609 has 4 divisors (see below), whose sum is σ = 164479697604. Its totient is φ = 146204175616.

The previous prime is 155341936583. The next prime is 155341936627. The reversal of 155341936609 is 906639143551.

It is a happy number.

155341936609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 906639143551 = 883 ⋅1026771397.

It can be written as a sum of positive squares in 2 ways, for example, as 128072368384 + 27269568225 = 357872^2 + 165135^2 .

It is a cyclic number.

It is not a de Polignac number, because 155341936609 - 2²³ = 155333548001 is a prime.

It is a super-2 number, since 2×155341936609² (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 (155341936649) 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 3 ways as a sum of consecutive naturals, for example, 4568880472 + ... + 4568880505.

It is an arithmetic number, because the mean of its divisors is an integer number (41119924401).

Almost surely, 2^155341936609 is an apocalyptic number.

It is an amenable number.

155341936609 is a deficient number, since it is larger than the sum of its proper divisors (9137760995).

155341936609 is an equidigital number, since it uses as much as digits as its factorization.

155341936609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9137760994.

The product of its (nonzero) digits is 2624400, while the sum is 52.

The spelling of 155341936609 in words is "one hundred fifty-five billion, three hundred forty-one million, nine hundred thirty-six thousand, six hundred nine".