6551880779 has 8 divisors (see below), whose sum is σ = 6623615232. Its totient is φ = 6480302760.

The previous prime is 6551880761. The next prime is 6551880877. The reversal of 6551880779 is 9770881556.

6551880779 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6551880779 - 2¹⁶ = 6551815243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6551880079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46124 + ... + 123414.

It is an arithmetic number, because the mean of its divisors is an integer number (827951904).

Almost surely, 2^6551880779 is an apocalyptic number.

6551880779 is a deficient number, since it is larger than the sum of its proper divisors (71734453).

6551880779 is a wasteful number, since it uses less digits than its factorization.

6551880779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78217.

The product of its (nonzero) digits is 4233600, while the sum is 56.

The square root of 6551880779 is about 80943.6889386690. The cubic root of 6551880779 is about 1871.2076977574.

The spelling of 6551880779 in words is "six billion, five hundred fifty-one million, eight hundred eighty thousand, seven hundred seventy-nine".