155009033856 has 160 divisors (see below), whose sum is σ = 470009895300. Its totient is φ = 50694598656.

The previous prime is 155009033831. The next prime is 155009033873. The reversal of 155009033856 is 658330900551.

155009033856 is a `hidden beast` number, since 1 + 5 + 500 + 90 + 3 + 3 + 8 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 148212680256 + 6796353600 = 384984^2 + 82440^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 408460 + ... + 690548.

Almost surely, 2^155009033856 is an apocalyptic number.

155009033856 is a gapful number since it is divisible by the number (16) 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 155009033856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235004947650).

155009033856 is an abundant number, since it is smaller than the sum of its proper divisors (315000861444).

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

155009033856 is an equidigital number, since it uses as much as digits as its factorization.

155009033856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282168 (or 282147 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 155009033856 in words is "one hundred fifty-five billion, nine million, thirty-three thousand, eight hundred fifty-six".