2478668672 has 16 divisors (see below), whose sum is σ = 4937973000. Its totient is φ = 1239334272.

The previous prime is 2478668671. The next prime is 2478668677. The reversal of 2478668672 is 2768668742.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×2478668672² = 12287596771108487168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478668671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9682172 + ... + 9682427.

Almost surely, 2^2478668672 is an apocalyptic number.

It is an amenable number.

2478668672 is a deficient number, since it is larger than the sum of its proper divisors (2459304328).

2478668672 is an equidigital number, since it uses as much as digits as its factorization.

2478668672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19364613 (or 19364601 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 56.

The square root of 2478668672 is about 49786.2297427712. The cubic root of 2478668672 is about 1353.3376348611.

The spelling of 2478668672 in words is "two billion, four hundred seventy-eight million, six hundred sixty-eight thousand, six hundred seventy-two".