6549684959969 has 128 divisors (see below), whose sum is σ = 7785676800000. Its totient is φ = 5473766833920.

The previous prime is 6549684959941. The next prime is 6549684959971. The reversal of 6549684959969 is 9699594869456.

It is a cyclic number.

It is not a de Polignac number, because 6549684959969 - 2³⁶ = 6480965483233 is a prime.

It is a super-2 number, since 2×6549684959969² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6549684959999) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5120941472 + ... + 5120942750.

It is an arithmetic number, because the mean of its divisors is an integer number (60825600000).

Almost surely, 2^{6549684959969} is an apocalyptic number.

It is an amenable number.

6549684959969 is a deficient number, since it is larger than the sum of its proper divisors (1235991840031).

6549684959969 is a wasteful number, since it uses less digits than its factorization.

6549684959969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603.

The product of its digits is 40814668800, while the sum is 89.

The spelling of 6549684959969 in words is "six trillion, five hundred forty-nine billion, six hundred eighty-four million, nine hundred fifty-nine thousand, nine hundred sixty-nine".