355881720720 has 320 divisors, whose sum is σ = 1171939276800. Its totient is φ = 89086832640.

The previous prime is 355881720707. The next prime is 355881720721. The reversal of 355881720720 is 27027188553.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 355881720720.

It is not an unprimeable number, because it can be changed into a prime (355881720721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 387248421 + ... + 387249339.

It is an arithmetic number, because the mean of its divisors is an integer number (3662310240).

Almost surely, 2^355881720720 is an apocalyptic number.

355881720720 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 355881720720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585969638400).

355881720720 is an abundant number, since it is smaller than the sum of its proper divisors (816057556080).

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

355881720720 is a wasteful number, since it uses less digits than its factorization.

355881720720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638 (or 1632 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 355881720720 in words is "three hundred fifty-five billion, eight hundred eighty-one million, seven hundred twenty thousand, seven hundred twenty".