155432224020 has 48 divisors (see below), whose sum is σ = 435261254400. Its totient is φ = 41443733376.

The previous prime is 155432224019. The next prime is 155432224091. The reversal of 155432224020 is 20422234551.

155432224020 is digitally balanced in base 3, because in such base 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 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, 379506 + ... + 674454.

It is an arithmetic number, because the mean of its divisors is an integer number (9067942800).

Almost surely, 2^155432224020 is an apocalyptic number.

155432224020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155432224020 is an abundant number, since it is smaller than the sum of its proper divisors (279829030380).

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

155432224020 is a wasteful number, since it uses less digits than its factorization.

155432224020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303744 (or 303742 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 155432224020 its reverse (20422234551), we get a palindrome (175854458571).

The spelling of 155432224020 in words is "one hundred fifty-five billion, four hundred thirty-two million, two hundred twenty-four thousand, twenty".