55226985660 has 360 divisors, whose sum is σ = 213215301936. Its totient is φ = 11474749440.

The previous prime is 55226985643. The next prime is 55226985661. The reversal of 55226985660 is 6658962255.

55226985660 is a `hidden beast` number, since 5 + 52 + 26 + 9 + 8 + 566 + 0 = 666.

It is a super-4 number, since 4×55226985660⁴ (a number of 44 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55226985597 and 55226985606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55226985661) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 4748172 + ... + 4759788.

Almost surely, 2^55226985660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55226985660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106607650968).

55226985660 is an abundant number, since it is smaller than the sum of its proper divisors (157988316276).

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

55226985660 is a wasteful number, since it uses less digits than its factorization.

55226985660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11671 (or 11645 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 54.

The spelling of 55226985660 in words is "fifty-five billion, two hundred twenty-six million, nine hundred eighty-five thousand, six hundred sixty".