2722478561 has 8 divisors (see below), whose sum is σ = 2970669504. Its totient is φ = 2474403120.

The previous prime is 2722478557. The next prime is 2722478567. The reversal of 2722478561 is 1658742272.

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

It is a cyclic number.

It is not a de Polignac number, because 2722478561 - 2² = 2722478557 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2722478567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24755 + ... + 77831.

It is an arithmetic number, because the mean of its divisors is an integer number (371333688).

Almost surely, 2^2722478561 is an apocalyptic number.

It is an amenable number.

2722478561 is a deficient number, since it is larger than the sum of its proper divisors (248190943).

2722478561 is a wasteful number, since it uses less digits than its factorization.

2722478561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57751.

The product of its digits is 376320, while the sum is 44.

The square root of 2722478561 is about 52177.3759497351. The cubic root of 2722478561 is about 1396.3302805592.

The spelling of 2722478561 in words is "two billion, seven hundred twenty-two million, four hundred seventy-eight thousand, five hundred sixty-one".