2135805556 has 12 divisors (see below), whose sum is σ = 3740780260. Its totient is φ = 1067011200.

The previous prime is 2135805517. The next prime is 2135805559. The reversal of 2135805556 is 6555085312.

It can be written as a sum of positive squares in 2 ways, for example, as 107744400 + 2028061156 = 10380^2 + 45034^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135805559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217491 + ... + 227098.

Almost surely, 2^2135805556 is an apocalyptic number.

It is an amenable number.

2135805556 is a deficient number, since it is larger than the sum of its proper divisors (1604974704).

2135805556 is a wasteful number, since it uses less digits than its factorization.

2135805556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445794 (or 445792 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 40.

The square root of 2135805556 is about 46214.7763815860. The cubic root of 2135805556 is about 1287.8162593303.

The spelling of 2135805556 in words is "two billion, one hundred thirty-five million, eight hundred five thousand, five hundred fifty-six".