3551343793920 has 864 divisors, whose sum is σ = 13559709456384. Its totient is φ = 852797030400.

The previous prime is 3551343793909. The next prime is 3551343793927. The reversal of 3551343793920 is 293973431553.

3551343793920 is a `hidden beast` number, since 3 + 5 + 513 + 4 + 3 + 79 + 39 + 20 = 666.

3551343793920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3551343793920² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551343793927) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1160189190 + ... + 1160192250.

Almost surely, 2^{3551343793920} is an apocalyptic number.

3551343793920 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 3551343793920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6779854728192).

3551343793920 is an abundant number, since it is smaller than the sum of its proper divisors (10008365662464).

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

3551343793920 is a wasteful number, since it uses less digits than its factorization.

3551343793920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289 (or 3272 counting only the distinct ones).

The product of its (nonzero) digits is 9185400, while the sum is 54.

The spelling of 3551343793920 in words is "three trillion, five hundred fifty-one billion, three hundred forty-three million, seven hundred ninety-three thousand, nine hundred twenty".