155133304020 has 36 divisors (see below), whose sum is σ = 470571022740. Its totient is φ = 41368881024.

The previous prime is 155133303931. The next prime is 155133304093. The reversal of 155133304020 is 20403331551.

It can be written as a sum of positive squares in 2 ways, for example, as 40480635204 + 114652668816 = 201198^2 + 338604^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430925665 + ... + 430926024.

Almost surely, 2^155133304020 is an apocalyptic number.

155133304020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155133304020 is an abundant number, since it is smaller than the sum of its proper divisors (315437718720).

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

155133304020 is a wasteful number, since it uses less digits than its factorization.

155133304020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861851704 (or 861851699 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 155133304020 its reverse (20403331551), we get a palindrome (175536635571).

The spelling of 155133304020 in words is "one hundred fifty-five billion, one hundred thirty-three million, three hundred four thousand, twenty".