6469376989009 has 27 divisors (see below), whose sum is σ = 7181370009723. Its totient is φ = 5823590731200.

The previous prime is 6469376989007. The next prime is 6469376989067. The reversal of 6469376989009 is 9009896739646.

The square root of 6469376989009 is 2543497.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4055579739409 + 2413797249600 = 2013847^2 + 1553640^2 .

It is not a de Polignac number, because 6469376989009 - 2¹ = 6469376989007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6469376989007) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2993694889 + ... + 2993697049.

Almost surely, 2^{6469376989009} is an apocalyptic number.

6469376989009 is the 2543497-th square number.

6469376989009 is the 1271749-th centered octagonal number.

It is an amenable number.

6469376989009 is a deficient number, since it is larger than the sum of its proper divisors (711993020714).

6469376989009 is an frugal number, since it uses more digits than its factorization.

6469376989009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4558 (or 2279 counting only the distinct ones).

The product of its (nonzero) digits is 952342272, while the sum is 76.

The spelling of 6469376989009 in words is "six trillion, four hundred sixty-nine billion, three hundred seventy-six million, nine hundred eighty-nine thousand, nine".