549755813887 has 16 divisors (see below), whose sum is σ = 636328345600. Its totient is φ = 465193834560.

The previous prime is 549755813881. The next prime is 549755813911. The reversal of 549755813887 is 788318557945.

549755813887 is nontrivially palindromic in base 2 and base 8.

It is a Cunningham number, because it is equal to 2³⁹-1.

It is a de Polignac number, because none of the positive numbers 2^k-549755813887 is a prime.

It is a Duffinian number.

549755813887 is a nontrivial repdigit in base 2 and base 8.

It is a plaindrome in base 2, base 4, base 8 and base 16.

It is a nialpdrome in base 2 and base 8.

It is a zygodrome in base 2 and base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549755813881) by changing a digit.

It is a nontrivial repunit in base 2.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4468939 + ... + 4590307.

It is an arithmetic number, because the mean of its divisors is an integer number (39770521600).

Almost surely, 2^549755813887 is an apocalyptic number.

549755813887 is a deficient number, since it is larger than the sum of its proper divisors (86572531713).

549755813887 is a wasteful number, since it uses less digits than its factorization.

549755813887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129646.

The product of its digits is 338688000, while the sum is 70.

The spelling of 549755813887 in words is "five hundred forty-nine billion, seven hundred fifty-five million, eight hundred thirteen thousand, eight hundred eighty-seven".