155303112020 has 48 divisors (see below), whose sum is σ = 372749852160. Its totient is φ = 53243583744.

The previous prime is 155303112007. The next prime is 155303112061. The reversal of 155303112020 is 20211303551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4598837 + ... + 4632483.

It is an arithmetic number, because the mean of its divisors is an integer number (7765621920).

Almost surely, 2^155303112020 is an apocalyptic number.

155303112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155303112020 is an abundant number, since it is smaller than the sum of its proper divisors (217446740140).

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

155303112020 is a wasteful number, since it uses less digits than its factorization.

155303112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66632 (or 66630 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 155303112020 its reverse (20211303551), we get a palindrome (175514415571).

The spelling of 155303112020 in words is "one hundred fifty-five billion, three hundred three million, one hundred twelve thousand, twenty".