355143124020 has 96 divisors (see below), whose sum is σ = 1009490428800. Its totient is φ = 93276012544.

The previous prime is 355143124003. The next prime is 355143124043. The reversal of 355143124020 is 20421341553.

It is a super-2 number, since 2×355143124020² (a number of 24 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 1242991 + ... + 1501769.

It is an arithmetic number, because the mean of its divisors is an integer number (10515525300).

Almost surely, 2^355143124020 is an apocalyptic number.

355143124020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 355143124020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504745214400).

355143124020 is an abundant number, since it is smaller than the sum of its proper divisors (654347304780).

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

355143124020 is a wasteful number, since it uses less digits than its factorization.

355143124020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259137 (or 259135 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 355143124020 its reverse (20421341553), we get a palindrome (375564465573).

The spelling of 355143124020 in words is "three hundred fifty-five billion, one hundred forty-three million, one hundred twenty-four thousand, twenty".