1555061056016 has 40 divisors (see below), whose sum is σ = 3250520250264. Its totient is φ = 716431887360.

The previous prime is 1555061056013. The next prime is 1555061056033. The reversal of 1555061056016 is 6106501605551.

It can be written as a sum of positive squares in 4 ways, for example, as 177911865616 + 1377149190400 = 421796^2 + 1173520^2 .

It is not an unprimeable number, because it can be changed into a prime (1555061056013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6595325 + ... + 6827036.

Almost surely, 2^{1555061056016} is an apocalyptic number.

1555061056016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1555061056016 is an abundant number, since it is smaller than the sum of its proper divisors (1695459194248).

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

1555061056016 is a wasteful number, since it uses less digits than its factorization.

1555061056016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13422939 (or 13422933 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 1555061056016 in words is "one trillion, five hundred fifty-five billion, sixty-one million, fifty-six thousand, sixteen".