2643335766955 has 16 divisors (see below), whose sum is σ = 3508327557504. Its totient is φ = 1899244990080.

The previous prime is 2643335766889. The next prime is 2643335766971. The reversal of 2643335766955 is 5596675333462.

It is not a de Polignac number, because 2643335766955 - 2¹⁷ = 2643335635883 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549547651 + ... + 549552460.

It is an arithmetic number, because the mean of its divisors is an integer number (219270472344).

Almost surely, 2^{2643335766955} is an apocalyptic number.

2643335766955 is a deficient number, since it is larger than the sum of its proper divisors (864991790549).

2643335766955 is a wasteful number, since it uses less digits than its factorization.

2643335766955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099100166.

The product of its digits is 367416000, while the sum is 64.

The spelling of 2643335766955 in words is "two trillion, six hundred forty-three billion, three hundred thirty-five million, seven hundred sixty-six thousand, nine hundred fifty-five".