13555944900 has 81 divisors (see below), whose sum is σ = 42501307303. Its totient is φ = 3613987200.

The previous prime is 13555944889. The next prime is 13555944931. The reversal of 13555944900 is 944955531.

The square root of 13555944900 is 116430.

It is a perfect power (a square), and thus also a powerful number.

13555944900 is a `hidden beast` number, since 1 + 3 + 5 + 559 + 4 + 4 + 90 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1397124 + 13554547776 = 1182^2 + 116424^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3490960 + ... + 3494840.

Almost surely, 2^13555944900 is an apocalyptic number.

13555944900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13555944900 is the 116430-th square number.

It is an amenable number.

13555944900 is an abundant number, since it is smaller than the sum of its proper divisors (28945362403).

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

13555944900 is an equidigital number, since it uses as much as digits as its factorization.

13555944900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7782 (or 3891 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 13555944900 in words is "thirteen billion, five hundred fifty-five million, nine hundred forty-four thousand, nine hundred".