155330155520 has 88 divisors (see below), whose sum is σ = 373252338144. Its totient is φ = 62025015296.

The previous prime is 155330155501. The next prime is 155330155523. The reversal of 155330155520 is 25551033551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155330155523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2979599 + ... + 3031281.

Almost surely, 2^155330155520 is an apocalyptic number.

155330155520 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 155330155520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186626169072).

155330155520 is an abundant number, since it is smaller than the sum of its proper divisors (217922182624).

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

155330155520 is an equidigital number, since it uses as much as digits as its factorization.

155330155520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52295 (or 52277 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 35.

The spelling of 155330155520 in words is "one hundred fifty-five billion, three hundred thirty million, one hundred fifty-five thousand, five hundred twenty".