6511358791 has 8 divisors (see below), whose sum is σ = 7458822144. Its totient is φ = 5568212760.

The previous prime is 6511358773. The next prime is 6511358797. The reversal of 6511358791 is 1978531156.

6511358791 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 6511358791 - 2⁹ = 6511358279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6511358797) 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, 1076095 + ... + 1082128.

It is an arithmetic number, because the mean of its divisors is an integer number (932352768).

Almost surely, 2^6511358791 is an apocalyptic number.

6511358791 is a deficient number, since it is larger than the sum of its proper divisors (947463353).

6511358791 is a wasteful number, since it uses less digits than its factorization.

6511358791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158661.

The product of its digits is 226800, while the sum is 46.

The square root of 6511358791 is about 80692.9909657586. The cubic root of 6511358791 is about 1867.3420435843.

It can be divided in two parts, 65113 and 58791, that added together give a square (123904 = 352²).

The spelling of 6511358791 in words is "six billion, five hundred eleven million, three hundred fifty-eight thousand, seven hundred ninety-one".