3551427806543 has 16 divisors (see below), whose sum is σ = 3572861460000. Its totient is φ = 3530068480512.

The previous prime is 3551427806483. The next prime is 3551427806573. The reversal of 3551427806543 is 3456087241553.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3551427806543 is a prime.

It is a super-2 number, since 2×3551427806543² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551427806573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303820643 + ... + 303832331.

It is an arithmetic number, because the mean of its divisors is an integer number (223303841250).

Almost surely, 2^{3551427806543} is an apocalyptic number.

3551427806543 is a deficient number, since it is larger than the sum of its proper divisors (21433653457).

3551427806543 is a wasteful number, since it uses less digits than its factorization.

3551427806543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14714.

The product of its (nonzero) digits is 12096000, while the sum is 53.

The spelling of 3551427806543 in words is "three trillion, five hundred fifty-one billion, four hundred twenty-seven million, eight hundred six thousand, five hundred forty-three".