155121323510230 has 128 divisors (see below), whose sum is σ = 364157803247616. Its totient is φ = 46132018944000.

The previous prime is 155121323510201. The next prime is 155121323510233. The reversal of 155121323510230 is 32015323121551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155121323510233) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3819697 + ... + 18023116.

It is an arithmetic number, because the mean of its divisors is an integer number (2844982837872).

Almost surely, 2^{155121323510230} is an apocalyptic number.

155121323510230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155121323510230 is an abundant number, since it is smaller than the sum of its proper divisors (209036479737386).

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

155121323510230 is a wasteful number, since it uses less digits than its factorization.

155121323510230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21843262.

The product of its (nonzero) digits is 27000, while the sum is 34.

Adding to 155121323510230 its reverse (32015323121551), we get a palindrome (187136646631781).

The spelling of 155121323510230 in words is "one hundred fifty-five trillion, one hundred twenty-one billion, three hundred twenty-three million, five hundred ten thousand, two hundred thirty".