2103556680 has 48 divisors (see below), whose sum is σ = 6836560380. Its totient is φ = 560948352.

The previous prime is 2103556649. The next prime is 2103556703. The reversal of 2103556680 is 866553012.

2103556680 is a `hidden beast` number, since 2 + 10 + 3 + 5 + 566 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1847108484 + 256448196 = 42978^2 + 16014^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2921247 + ... + 2921966.

Almost surely, 2^2103556680 is an apocalyptic number.

2103556680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103556680 is an abundant number, since it is smaller than the sum of its proper divisors (4733003700).

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

2103556680 is a wasteful number, since it uses less digits than its factorization.

2103556680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5843230 (or 5843223 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 2103556680 is about 45864.5470924984. The cubic root of 2103556680 is about 1281.3017112423.

The spelling of 2103556680 in words is "two billion, one hundred three million, five hundred fifty-six thousand, six hundred eighty".