549463740639 has 8 divisors (see below), whose sum is σ = 799219986432. Its totient is φ = 333008327640.

The previous prime is 549463740629. The next prime is 549463740659. The reversal of 549463740639 is 936047364945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 549463740639 - 2⁹ = 549463740127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549463740629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8325208159 + ... + 8325208224.

It is an arithmetic number, because the mean of its divisors is an integer number (99902498304).

Almost surely, 2^549463740639 is an apocalyptic number.

549463740639 is a deficient number, since it is larger than the sum of its proper divisors (249756245793).

549463740639 is a wasteful number, since it uses less digits than its factorization.

549463740639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16650416397.

The product of its (nonzero) digits is 58786560, while the sum is 60.

The spelling of 549463740639 in words is "five hundred forty-nine billion, four hundred sixty-three million, seven hundred forty thousand, six hundred thirty-nine".