1556853480180 has 54 divisors (see below), whose sum is σ = 4722506335638. Its totient is φ = 415156464000.

The previous prime is 1556853480167. The next prime is 1556853480197. The reversal of 1556853480180 is 810843586551.

1556853480180 is a `hidden beast` number, since 1 + 5 + 5 + 6 + 85 + 3 + 480 + 1 + 80 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 663136606224 + 893716873956 = 814332^2 + 945366^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16693680 + ... + 16786680.

Almost surely, 2^{1556853480180} is an apocalyptic number.

1556853480180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1556853480180 is an abundant number, since it is smaller than the sum of its proper divisors (3165652855458).

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

1556853480180 is an frugal number, since it uses more digits than its factorization.

1556853480180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186017 (or 93011 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 54.

The spelling of 1556853480180 in words is "one trillion, five hundred fifty-six billion, eight hundred fifty-three million, four hundred eighty thousand, one hundred eighty".