13551540044 has 24 divisors (see below), whose sum is σ = 27118586880. Its totient is φ = 5804480016.

The previous prime is 13551540019. The next prime is 13551540059. The reversal of 13551540044 is 44004515531.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88322 + ... + 186825.

It is an arithmetic number, because the mean of its divisors is an integer number (1129941120).

Almost surely, 2^13551540044 is an apocalyptic number.

13551540044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13551540044 is an abundant number, since it is smaller than the sum of its proper divisors (13567046836).

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

13551540044 is a wasteful number, since it uses less digits than its factorization.

13551540044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276917 (or 276915 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 13551540044 in words is "thirteen billion, five hundred fifty-one million, five hundred forty thousand, forty-four".