15554365540 has 48 divisors (see below), whose sum is σ = 37340134272. Its totient is φ = 5331545856.

The previous prime is 15554365487. The next prime is 15554365601. The reversal of 15554365540 is 4556345551.

It is a happy number.

15554365540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632352 + ... + 656488.

It is an arithmetic number, because the mean of its divisors is an integer number (777919464).

Almost surely, 2^15554365540 is an apocalyptic number.

15554365540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15554365540 is an abundant number, since it is smaller than the sum of its proper divisors (21785768732).

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

15554365540 is a wasteful number, since it uses less digits than its factorization.

15554365540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28756 (or 28754 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 43.

The spelling of 15554365540 in words is "fifteen billion, five hundred fifty-four million, three hundred sixty-five thousand, five hundred forty".