2643111446261 has 16 divisors (see below), whose sum is σ = 3212269522560. Its totient is φ = 2141513008320.

The previous prime is 2643111446201. The next prime is 2643111446281. The reversal of 2643111446261 is 1626441113462.

2643111446261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2643111446261 - 2¹⁸ = 2643111184117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643111446201) 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, 318673385 + ... + 318681678.

It is an arithmetic number, because the mean of its divisors is an integer number (200766845160).

Almost surely, 2^{2643111446261} is an apocalyptic number.

It is an amenable number.

2643111446261 is a deficient number, since it is larger than the sum of its proper divisors (569158076299).

2643111446261 is a wasteful number, since it uses less digits than its factorization.

2643111446261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637355116.

The product of its digits is 165888, while the sum is 41.

The spelling of 2643111446261 in words is "two trillion, six hundred forty-three billion, one hundred eleven million, four hundred forty-six thousand, two hundred sixty-one".