6779510121 has 8 divisors (see below), whose sum is σ = 9571073184. Its totient is φ = 4253810240.

The previous prime is 6779510113. The next prime is 6779510191. The reversal of 6779510121 is 1210159776.

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 6779510121 - 2³ = 6779510113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6779510121.

It is not an unprimeable number, because it can be changed into a prime (6779510191) 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, 66465735 + ... + 66465836.

It is an arithmetic number, because the mean of its divisors is an integer number (1196384148).

Almost surely, 2^6779510121 is an apocalyptic number.

It is an amenable number.

6779510121 is a deficient number, since it is larger than the sum of its proper divisors (2791563063).

6779510121 is a wasteful number, since it uses less digits than its factorization.

6779510121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132931591.

The product of its (nonzero) digits is 26460, while the sum is 39.

The square root of 6779510121 is about 82337.7806416957. The cubic root of 6779510121 is about 1892.6316764123.

Adding to 6779510121 its reverse (1210159776), we get a palindrome (7989669897).

The spelling of 6779510121 in words is "six billion, seven hundred seventy-nine million, five hundred ten thousand, one hundred twenty-one".