6738809553 has 64 divisors (see below), whose sum is σ = 12029184000. Its totient is φ = 3642293952.

The previous prime is 6738809531. The next prime is 6738809557. The reversal of 6738809553 is 3559088376.

It is a happy number.

6738809553 is a `hidden beast` number, since 6 + 7 + 3 + 8 + 80 + 9 + 553 = 666.

It is not a de Polignac number, because 6738809553 - 2⁵ = 6738809521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6738809553.

It is not an unprimeable number, because it can be changed into a prime (6738809557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3256003 + ... + 3258071.

It is an arithmetic number, because the mean of its divisors is an integer number (187956000).

Almost surely, 2^6738809553 is an apocalyptic number.

6738809553 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

6738809553 is a deficient number, since it is larger than the sum of its proper divisors (5290374447).

6738809553 is a wasteful number, since it uses less digits than its factorization.

6738809553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011 (or 3005 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The square root of 6738809553 is about 82090.2524846891. The cubic root of 6738809553 is about 1888.8366208960.

The spelling of 6738809553 in words is "six billion, seven hundred thirty-eight million, eight hundred nine thousand, five hundred fifty-three".