1663386226760 has 64 divisors (see below), whose sum is σ = 3762192873600. Its totient is φ = 661881280000.

The previous prime is 1663386226753. The next prime is 1663386226763. The reversal of 1663386226760 is 676226833661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1663386226696 and 1663386226705.

It is not an unprimeable number, because it can be changed into a prime (1663386226763) 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, 8019965 + ... + 8224755.

It is an arithmetic number, because the mean of its divisors is an integer number (58784263650).

Almost surely, 2^{1663386226760} is an apocalyptic number.

1663386226760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1663386226760 is an abundant number, since it is smaller than the sum of its proper divisors (2098806646840).

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

1663386226760 is a wasteful number, since it uses less digits than its factorization.

1663386226760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205862 (or 205858 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 56.

The spelling of 1663386226760 in words is "one trillion, six hundred sixty-three billion, three hundred eighty-six million, two hundred twenty-six thousand, seven hundred sixty".