55404105003821 has 8 divisors (see below), whose sum is σ = 63571243990464. Its totient is φ = 47300032728000.

The previous prime is 55404105003817. The next prime is 55404105003827. The reversal of 55404105003821 is 12830050140455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55404105003821 - 2² = 55404105003817 is a prime.

It is a super-2 number, since 2×55404105003821² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55404105003827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15766675820 + ... + 15766679333.

It is an arithmetic number, because the mean of its divisors is an integer number (7946405498808).

Almost surely, 2^{55404105003821} is an apocalyptic number.

It is an amenable number.

55404105003821 is a deficient number, since it is larger than the sum of its proper divisors (8167138986643).

55404105003821 is a wasteful number, since it uses less digits than its factorization.

55404105003821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31533355411.

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 55404105003821 in words is "fifty-five trillion, four hundred four billion, one hundred five million, three thousand, eight hundred twenty-one".