2136549555 has 56 divisors (see below), whose sum is σ = 4393230432. Its totient is φ = 976696704.

The previous prime is 2136549553. The next prime is 2136549593. The reversal of 2136549555 is 5559456312.

2136549555 is a `hidden beast` number, since 21 + 36 + 5 + 49 + 555 = 666.

It is not a de Polignac number, because 2136549555 - 2¹ = 2136549553 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2136549555.

It is not an unprimeable number, because it can be changed into a prime (2136549551) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 16354 + ... + 67383.

Almost surely, 2^2136549555 is an apocalyptic number.

2136549555 is an abundant number, since it is smaller than the sum of its proper divisors (2256680877).

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

2136549555 is an frugal number, since it uses more digits than its factorization.

2136549555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83767 (or 83752 counting only the distinct ones).

The product of its digits is 810000, while the sum is 45.

The square root of 2136549555 is about 46222.8250434782. The cubic root of 2136549555 is about 1287.9657771198.

The spelling of 2136549555 in words is "two billion, one hundred thirty-six million, five hundred forty-nine thousand, five hundred fifty-five".