5601781611 has 16 divisors (see below), whose sum is σ = 8523232800. Its totient is φ = 3633587424.

The previous prime is 5601781589. The next prime is 5601781637. The reversal of 5601781611 is 1161871065.

5601781611 is a `hidden beast` number, since 560 + 1 + 7 + 81 + 6 + 11 = 666.

5601781611 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5601781611 - 2⁶ = 5601781547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5601781111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2802696 + ... + 2804693.

It is an arithmetic number, because the mean of its divisors is an integer number (532702050).

Almost surely, 2^5601781611 is an apocalyptic number.

5601781611 is a deficient number, since it is larger than the sum of its proper divisors (2921451189).

5601781611 is a wasteful number, since it uses less digits than its factorization.

5601781611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5607435 (or 5607429 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 5601781611 is about 74845.0506780508. The cubic root of 5601781611 is about 1775.9963048910.

The spelling of 5601781611 in words is "five billion, six hundred one million, seven hundred eighty-one thousand, six hundred eleven".