13550908661808 has 160 divisors (see below), whose sum is σ = 42363897537024. Its totient is φ = 3643677413376.

The previous prime is 13550908661789. The next prime is 13550908661821. The reversal of 13550908661808 is 80816680905531.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86212666 + ... + 86369702.

Almost surely, 2^{13550908661808} 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 13550908661808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21181948768512).

13550908661808 is an abundant number, since it is smaller than the sum of its proper divisors (28812988875216).

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

13550908661808 is a wasteful number, since it uses less digits than its factorization.

13550908661808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172179 (or 172173 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 60.

The spelling of 13550908661808 in words is "thirteen trillion, five hundred fifty billion, nine hundred eight million, six hundred sixty-one thousand, eight hundred eight".