549361978808 has 16 divisors (see below), whose sum is σ = 1030166581680. Its totient is φ = 274650890368.

The previous prime is 549361978801. The next prime is 549361978829. The reversal of 549361978808 is 808879163945.

It is a happy number.

It is a super-2 number, since 2×549361978808² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549361978801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3684716 + ... + 3830907.

It is an arithmetic number, because the mean of its divisors is an integer number (64385411355).

Almost surely, 2^549361978808 is an apocalyptic number.

It is an amenable number.

549361978808 is a deficient number, since it is larger than the sum of its proper divisors (480804602872).

549361978808 is a wasteful number, since it uses less digits than its factorization.

549361978808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7524766 (or 7524762 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 68.

The spelling of 549361978808 in words is "five hundred forty-nine billion, three hundred sixty-one million, nine hundred seventy-eight thousand, eight hundred eight".