549591814920 has 64 divisors (see below), whose sum is σ = 1648829560320. Its totient is φ = 146553007104.

The previous prime is 549591814907. The next prime is 549591814931. The reversal of 549591814920 is 29418195945.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5041632 + ... + 5149488.

It is an arithmetic number, because the mean of its divisors is an integer number (25762961880).

Almost surely, 2^549591814920 is an apocalyptic number.

It is an amenable number.

549591814920 is an abundant number, since it is smaller than the sum of its proper divisors (1099237745400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549591814920 is a wasteful number, since it uses less digits than its factorization.

549591814920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150334 (or 150330 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 57.

The spelling of 549591814920 in words is "five hundred forty-nine billion, five hundred ninety-one million, eight hundred fourteen thousand, nine hundred twenty".