6979220028787 has 4 divisors (see below), whose sum is σ = 7074825782680. Its totient is φ = 6883614274896.

The previous prime is 6979220028779. The next prime is 6979220028797. The reversal of 6979220028787 is 7878200229796.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6979220028787 - 2³ = 6979220028779 is a prime.

It is a super-2 number, since 2×6979220028787² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6979220028707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47802876837 + ... + 47802876982.

It is an arithmetic number, because the mean of its divisors is an integer number (1768706445670).

Almost surely, 2^{6979220028787} is an apocalyptic number.

6979220028787 is a deficient number, since it is larger than the sum of its proper divisors (95605753893).

6979220028787 is an equidigital number, since it uses as much as digits as its factorization.

6979220028787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95605753892.

The product of its (nonzero) digits is 85349376, while the sum is 67.

The spelling of 6979220028787 in words is "six trillion, nine hundred seventy-nine billion, two hundred twenty million, twenty-eight thousand, seven hundred eighty-seven".