549609778472 has 16 divisors (see below), whose sum is σ = 1032151495200. Its totient is φ = 274369379760.

The previous prime is 549609778463. The next prime is 549609778481. The reversal of 549609778472 is 274877906945.

It is an interprime number because it is at equal distance from previous prime (549609778463) and next prime (549609778481).

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, 54433322 + ... + 54443417.

It is an arithmetic number, because the mean of its divisors is an integer number (64509468450).

Almost surely, 2^549609778472 is an apocalyptic number.

It is an amenable number.

549609778472 is a deficient number, since it is larger than the sum of its proper divisors (482541716728).

549609778472 is a wasteful number, since it uses less digits than its factorization.

549609778472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108877376 (or 108877372 counting only the distinct ones).

The product of its (nonzero) digits is 213373440, while the sum is 68.

The spelling of 549609778472 in words is "five hundred forty-nine billion, six hundred nine million, seven hundred seventy-eight thousand, four hundred seventy-two".