55404642221046 has 96 divisors (see below), whose sum is σ = 131501571046560. Its totient is φ = 16780702804992.

The previous prime is 55404642221009. The next prime is 55404642221069. The reversal of 55404642221046 is 64012224640455.

55404642221046 is a `hidden beast` number, since 5 + 5 + 4 + 0 + 4 + 6 + 422 + 210 + 4 + 6 = 666.

It is a super-2 number, since 2×55404642221046² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55404642220992 and 55404642221010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84981021 + ... + 85630503.

It is an arithmetic number, because the mean of its divisors is an integer number (1369808031735).

Almost surely, 2^{55404642221046} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55404642221046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65750785523280).

55404642221046 is an abundant number, since it is smaller than the sum of its proper divisors (76096928825514).

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

55404642221046 is a wasteful number, since it uses less digits than its factorization.

55404642221046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659150 (or 659147 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 45.

The spelling of 55404642221046 in words is "fifty-five trillion, four hundred four billion, six hundred forty-two million, two hundred twenty-one thousand, forty-six".