549966138637 has 8 divisors (see below), whose sum is σ = 555038370432. Its totient is φ = 544915086000.

The previous prime is 549966138599. The next prime is 549966138647. The reversal of 549966138637 is 736831669945.

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 549966138637 - 2²⁷ = 549831920909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549966138647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5242614 + ... + 5346487.

It is an arithmetic number, because the mean of its divisors is an integer number (69379796304).

Almost surely, 2^549966138637 is an apocalyptic number.

It is an amenable number.

549966138637 is a deficient number, since it is larger than the sum of its proper divisors (5072231795).

549966138637 is a wasteful number, since it uses less digits than its factorization.

549966138637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10589579.

The product of its digits is 176359680, while the sum is 67.

The spelling of 549966138637 in words is "five hundred forty-nine billion, nine hundred sixty-six million, one hundred thirty-eight thousand, six hundred thirty-seven".