155154315230220 has 192 divisors, whose sum is σ = 437826041856000. Its totient is φ = 41052527619840.

The previous prime is 155154315230153. The next prime is 155154315230261. The reversal of 155154315230220 is 22032513451551.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8786123751 + ... + 8786141409.

It is an arithmetic number, because the mean of its divisors is an integer number (2280343968000).

Almost surely, 2^{155154315230220} is an apocalyptic number.

155154315230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155154315230220 is an abundant number, since it is smaller than the sum of its proper divisors (282671726625780).

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

155154315230220 is a wasteful number, since it uses less digits than its factorization.

155154315230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19868 (or 19866 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

Adding to 155154315230220 its reverse (22032513451551), we get a palindrome (177186828681771).

The spelling of 155154315230220 in words is "one hundred fifty-five trillion, one hundred fifty-four billion, three hundred fifteen million, two hundred thirty thousand, two hundred twenty".