6311540061 has 16 divisors (see below), whose sum is σ = 9842558400. Its totient is φ = 3986235504.

The previous prime is 6311539973. The next prime is 6311540063. The reversal of 6311540061 is 1600451136.

6311540061 is a `hidden beast` number, since 63 + 1 + 1 + 540 + 0 + 61 = 666.

6311540061 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 6311540061 - 2²² = 6307345757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6311540063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6151086 + ... + 6152111.

It is an arithmetic number, because the mean of its divisors is an integer number (615159900).

Almost surely, 2^6311540061 is an apocalyptic number.

It is an amenable number.

6311540061 is a deficient number, since it is larger than the sum of its proper divisors (3531018339).

6311540061 is a wasteful number, since it uses less digits than its factorization.

6311540061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12303225 (or 12303219 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 6311540061 is about 79445.2016235090. The cubic root of 6311540061 is about 1848.0417614740.

Adding to 6311540061 its reverse (1600451136), we get a palindrome (7911991197).

The spelling of 6311540061 in words is "six billion, three hundred eleven million, five hundred forty thousand, sixty-one".