4010540661 has 16 divisors (see below), whose sum is σ = 6013129920. Its totient is φ = 2641479120.

The previous prime is 4010540609. The next prime is 4010540671. The reversal of 4010540661 is 1660450104.

It is not a de Polignac number, because 4010540661 - 2¹¹ = 4010538613 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4010540671) 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, 892570 + ... + 897051.

It is an arithmetic number, because the mean of its divisors is an integer number (375820620).

Almost surely, 2^4010540661 is an apocalyptic number.

It is an amenable number.

4010540661 is a deficient number, since it is larger than the sum of its proper divisors (2002589259).

4010540661 is a wasteful number, since it uses less digits than its factorization.

4010540661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789713 (or 1789707 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 4010540661 is about 63328.8296196922. The cubic root of 4010540661 is about 1588.7941836698.

Adding to 4010540661 its reverse (1660450104), we get a palindrome (5670990765).

The spelling of 4010540661 in words is "four billion, ten million, five hundred forty thousand, six hundred sixty-one".