2611855545 has 16 divisors (see below), whose sum is σ = 4500428352. Its totient is φ = 1285836480.

The previous prime is 2611855541. The next prime is 2611855553. The reversal of 2611855545 is 5455581162.

It is not a de Polignac number, because 2611855545 - 2² = 2611855541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2611855497 and 2611855506.

It is not an unprimeable number, because it can be changed into a prime (2611855541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6696871 + ... + 6697260.

It is an arithmetic number, because the mean of its divisors is an integer number (281276772).

Almost surely, 2^2611855545 is an apocalyptic number.

It is an amenable number.

2611855545 is a deficient number, since it is larger than the sum of its proper divisors (1888572807).

2611855545 is a wasteful number, since it uses less digits than its factorization.

2611855545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13394152.

The product of its digits is 240000, while the sum is 42.

The square root of 2611855545 is about 51106.3160969366. The cubic root of 2611855545 is about 1377.1557228475.

The spelling of 2611855545 in words is "two billion, six hundred eleven million, eight hundred fifty-five thousand, five hundred forty-five".