3551955003421 has 16 divisors (see below), whose sum is σ = 4143414679488. Its totient is φ = 3009015712000.

The previous prime is 3551955003419. The next prime is 3551955003437. The reversal of 3551955003421 is 1243005591553.

It is a cyclic number.

It is not a de Polignac number, because 3551955003421 - 2¹ = 3551955003419 is a prime.

It is a super-4 number, since 4×3551955003421⁴ (a number of 51 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551955006421) 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, 94012855 + ... + 94050628.

It is an arithmetic number, because the mean of its divisors is an integer number (258963417468).

Almost surely, 2^{3551955003421} is an apocalyptic number.

It is an amenable number.

3551955003421 is a deficient number, since it is larger than the sum of its proper divisors (591459676067).

3551955003421 is a wasteful number, since it uses less digits than its factorization.

3551955003421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188063612.

The product of its (nonzero) digits is 405000, while the sum is 43.

The spelling of 3551955003421 in words is "three trillion, five hundred fifty-one billion, nine hundred fifty-five million, three thousand, four hundred twenty-one".