155011100326320 has 1280 divisors, whose sum is σ = 586774729728000. Its totient is φ = 33108590592000.

The previous prime is 155011100326261. The next prime is 155011100326339. The reversal of 155011100326320 is 23623001110551.

155011100326320 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 48914829696 + ... + 48914832864.

It is an arithmetic number, because the mean of its divisors is an integer number (458417757600).

Almost surely, 2^{155011100326320} is an apocalyptic number.

155011100326320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155011100326320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293387364864000).

155011100326320 is an abundant number, since it is smaller than the sum of its proper divisors (431763629401680).

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

155011100326320 is a wasteful number, since it uses less digits than its factorization.

155011100326320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3542 (or 3536 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 155011100326320 its reverse (23623001110551), we get a palindrome (178634101436871).

The spelling of 155011100326320 in words is "one hundred fifty-five trillion, eleven billion, one hundred million, three hundred twenty-six thousand, three hundred twenty".