2643211061 has 6 divisors (see below), whose sum is σ = 2734642710. Its totient is φ = 2551798536.

The previous prime is 2643211013. The next prime is 2643211079. The reversal of 2643211061 is 1601123462.

2643211061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2278630225 + 364580836 = 47735^2 + 19094^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2643211061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2643211061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643211261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 272090 + ... + 281636.

It is an arithmetic number, because the mean of its divisors is an integer number (455773785).

Almost surely, 2^2643211061 is an apocalyptic number.

It is an amenable number.

2643211061 is a deficient number, since it is larger than the sum of its proper divisors (91431649).

2643211061 is an frugal number, since it uses more digits than its factorization.

2643211061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19123 (or 9576 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2643211061 is about 51412.1684137131. The cubic root of 2643211061 is about 1382.6447672154.

The spelling of 2643211061 in words is "two billion, six hundred forty-three million, two hundred eleven thousand, sixty-one".