3551243064138 has 256 divisors, whose sum is σ = 10109366784000. Its totient is φ = 897070775040.

The previous prime is 3551243064137. The next prime is 3551243064143. The reversal of 3551243064138 is 8314603421553.

3551243064138 is a `hidden beast` number, since 3 + 5 + 512 + 43 + 0 + 64 + 1 + 38 = 666.

It is a super-2 number, since 2×3551243064138² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3551243064093 and 3551243064102.

It is not an unprimeable number, because it can be changed into a prime (3551243064137) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 507534456 + ... + 507541452.

It is an arithmetic number, because the mean of its divisors is an integer number (39489714000).

Almost surely, 2^{3551243064138} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3551243064138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5054683392000).

3551243064138 is an abundant number, since it is smaller than the sum of its proper divisors (6558123719862).

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

3551243064138 is a wasteful number, since it uses less digits than its factorization.

3551243064138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10362 (or 10356 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 3551243064138 in words is "three trillion, five hundred fifty-one billion, two hundred forty-three million, sixty-four thousand, one hundred thirty-eight".