2643042478 has 8 divisors (see below), whose sum is σ = 4039366968. Its totient is φ = 1296586824.

The previous prime is 2643042463. The next prime is 2643042569. The reversal of 2643042478 is 8742403462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2643042478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12467076 + ... + 12467287.

It is an arithmetic number, because the mean of its divisors is an integer number (504920871).

Almost surely, 2^2643042478 is an apocalyptic number.

2643042478 is a deficient number, since it is larger than the sum of its proper divisors (1396324490).

2643042478 is a wasteful number, since it uses less digits than its factorization.

2643042478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24934418.

The product of its (nonzero) digits is 258048, while the sum is 40.

The square root of 2643042478 is about 51410.5288632591. The cubic root of 2643042478 is about 1382.6153717373.

The spelling of 2643042478 in words is "two billion, six hundred forty-three million, forty-two thousand, four hundred seventy-eight".