1554443145616 has 80 divisors (see below), whose sum is σ = 3195465191424. Its totient is φ = 731045855232.

The previous prime is 1554443145589. The next prime is 1554443145637. The reversal of 1554443145616 is 6165413444551.

It is a self number, because there is not a number n which added to its sum of digits gives 1554443145616.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5134000 + ... + 5428336.

Almost surely, 2^{1554443145616} is an apocalyptic number.

1554443145616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1554443145616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597732595712).

1554443145616 is an abundant number, since it is smaller than the sum of its proper divisors (1641022045808).

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

1554443145616 is a wasteful number, since it uses less digits than its factorization.

1554443145616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294608 (or 294602 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 49.

The spelling of 1554443145616 in words is "one trillion, five hundred fifty-four billion, four hundred forty-three million, one hundred forty-five thousand, six hundred sixteen".