155340204099 has 4 divisors (see below), whose sum is σ = 207120272136. Its totient is φ = 103560136064.

The previous prime is 155340204079. The next prime is 155340204109. The reversal of 155340204099 is 990402043551.

155340204099 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.

It is a cyclic number.

It is not a de Polignac number, because 155340204099 - 2⁵ = 155340204067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155340204099.

It is not an unprimeable number, because it can be changed into a prime (155340204049) 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, 25890034014 + ... + 25890034019.

It is an arithmetic number, because the mean of its divisors is an integer number (51780068034).

Almost surely, 2^155340204099 is an apocalyptic number.

155340204099 is a deficient number, since it is larger than the sum of its proper divisors (51780068037).

155340204099 is an equidigital number, since it uses as much as digits as its factorization.

155340204099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51780068036.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 155340204099 in words is "one hundred fifty-five billion, three hundred forty million, two hundred four thousand, ninety-nine".