6688811451 has 32 divisors (see below), whose sum is σ = 10315202560. Its totient is φ = 3776328864.

The previous prime is 6688811429. The next prime is 6688811453. The reversal of 6688811451 is 1541188866.

It is not a de Polignac number, because 6688811451 - 2¹⁹ = 6688287163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6688811451.

It is not an unprimeable number, because it can be changed into a prime (6688811453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 998130 + ... + 1004808.

It is an arithmetic number, because the mean of its divisors is an integer number (322350080).

Almost surely, 2^6688811451 is an apocalyptic number.

6688811451 is a deficient number, since it is larger than the sum of its proper divisors (3626391109).

6688811451 is a wasteful number, since it uses less digits than its factorization.

6688811451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7255.

The product of its digits is 368640, while the sum is 48.

The square root of 6688811451 is about 81785.1542212888. The cubic root of 6688811451 is about 1884.1536586214.

The spelling of 6688811451 in words is "six billion, six hundred eighty-eight million, eight hundred eleven thousand, four hundred fifty-one".