6791821377 has 32 divisors (see below), whose sum is σ = 10541483520. Its totient is φ = 3846165120.

The previous prime is 6791821349. The next prime is 6791821391. The reversal of 6791821377 is 7731281976.

It is not a de Polignac number, because 6791821377 - 2¹⁴ = 6791804993 is a prime.

It is a super-2 number, since 2×6791821377² = 92257675234148352258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6791821307) 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, 28423 + ... + 119964.

It is an arithmetic number, because the mean of its divisors is an integer number (329421360).

Almost surely, 2^6791821377 is an apocalyptic number.

It is an amenable number.

6791821377 is a deficient number, since it is larger than the sum of its proper divisors (3749662143).

6791821377 is a wasteful number, since it uses less digits than its factorization.

6791821377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148493.

The product of its digits is 889056, while the sum is 51.

The square root of 6791821377 is about 82412.5074063397. The cubic root of 6791821377 is about 1893.7766255599.

The spelling of 6791821377 in words is "six billion, seven hundred ninety-one million, eight hundred twenty-one thousand, three hundred seventy-seven".