1555481486816 has 24 divisors (see below), whose sum is σ = 3062700101160. Its totient is φ = 777652889728.

The previous prime is 1555481486761. The next prime is 1555481486827. The reversal of 1555481486816 is 6186841845551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2457251 + ... + 3024738.

It is an arithmetic number, because the mean of its divisors is an integer number (127612504215).

Almost surely, 2^{1555481486816} is an apocalyptic number.

1555481486816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1555481486816 is a deficient number, since it is larger than the sum of its proper divisors (1507218614344).

1555481486816 is an equidigital number, since it uses as much as digits as its factorization.

1555481486816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5490866 (or 5490858 counting only the distinct ones).

The product of its digits is 36864000, while the sum is 62.

The spelling of 1555481486816 in words is "one trillion, five hundred fifty-five billion, four hundred eighty-one million, four hundred eighty-six thousand, eight hundred sixteen".