155774243328 has 320 divisors, whose sum is σ = 495905224320. Its totient is φ = 42893312000.

The previous prime is 155774243279. The next prime is 155774243363. The reversal of 155774243328 is 823342477551.

It is a super-3 number, since 3×155774243328³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8320378 + ... + 8339078.

It is an arithmetic number, because the mean of its divisors is an integer number (1549703826).

Almost surely, 2^155774243328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155774243328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247952612160).

155774243328 is an abundant number, since it is smaller than the sum of its proper divisors (340130980992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155774243328 is a wasteful number, since it uses less digits than its factorization.

155774243328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18779 (or 18763 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 51.

The spelling of 155774243328 in words is "one hundred fifty-five billion, seven hundred seventy-four million, two hundred forty-three thousand, three hundred twenty-eight".