2643647776275 has 96 divisors (see below), whose sum is σ = 4927437766656. Its totient is φ = 1239048720000.

The previous prime is 2643647776271. The next prime is 2643647776277. The reversal of 2643647776275 is 5726777463462.

It is not a de Polignac number, because 2643647776275 - 2² = 2643647776271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2643647776271) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23242092 + ... + 23355558.

It is an arithmetic number, because the mean of its divisors is an integer number (51327476736).

Almost surely, 2^{2643647776275} is an apocalyptic number.

2643647776275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2643647776275 is a deficient number, since it is larger than the sum of its proper divisors (2283789990381).

2643647776275 is a wasteful number, since it uses less digits than its factorization.

2643647776275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114433 (or 114428 counting only the distinct ones).

The product of its digits is 497871360, while the sum is 66.

The spelling of 2643647776275 in words is "two trillion, six hundred forty-three billion, six hundred forty-seven million, seven hundred seventy-six thousand, two hundred seventy-five".