155000000380928 has 128 divisors (see below), whose sum is σ = 320093911200000. Its totient is φ = 74976846151680.

The previous prime is 155000000380909. The next prime is 155000000380931. The reversal of 155000000380928 is 829083000000551.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×155000000380928² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3554290388 + ... + 3554333996.

It is an arithmetic number, because the mean of its divisors is an integer number (2500733681250).

Almost surely, 2^{155000000380928} 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 155000000380928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160046955600000).

155000000380928 is an abundant number, since it is smaller than the sum of its proper divisors (165093910819072).

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

155000000380928 is an frugal number, since it uses more digits than its factorization.

155000000380928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47169 (or 47141 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 155000000380928 in words is "one hundred fifty-five trillion, three hundred eighty thousand, nine hundred twenty-eight".