549732769509 has 96 divisors (see below), whose sum is σ = 926559800320. Its totient is φ = 283784497920.

The previous prime is 549732769423. The next prime is 549732769511. The reversal of 549732769509 is 905967237945.

It is not a de Polignac number, because 549732769509 - 2⁷ = 549732769381 is a prime.

It is a super-2 number, since 2×549732769509² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 549732769509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549732769519) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 319054722 + ... + 319056444.

Almost surely, 2^549732769509 is an apocalyptic number.

It is an amenable number.

549732769509 is a deficient number, since it is larger than the sum of its proper divisors (376827030811).

549732769509 is a wasteful number, since it uses less digits than its factorization.

549732769509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471 (or 2460 counting only the distinct ones).

The product of its (nonzero) digits is 128595600, while the sum is 66.

The spelling of 549732769509 in words is "five hundred forty-nine billion, seven hundred thirty-two million, seven hundred sixty-nine thousand, five hundred nine".