155144549999 has 8 divisors (see below), whose sum is σ = 156905801280. Its totient is φ = 153383700096.

The previous prime is 155144549971. The next prime is 155144550007. The reversal of 155144549999 is 999945441551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155144549999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155144549929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714419 + ... + 905915.

It is an arithmetic number, because the mean of its divisors is an integer number (19613225160).

Almost surely, 2^155144549999 is an apocalyptic number.

155144549999 is a deficient number, since it is larger than the sum of its proper divisors (1761251281).

155144549999 is an equidigital number, since it uses as much as digits as its factorization.

155144549999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200689.

The product of its digits is 52488000, while the sum is 65.

The spelling of 155144549999 in words is "one hundred fifty-five billion, one hundred forty-four million, five hundred forty-nine thousand, nine hundred ninety-nine".