6977218081 has 8 divisors (see below), whose sum is σ = 7625954304. Its totient is φ = 6354960960.

The previous prime is 6977218069. The next prime is 6977218093. The reversal of 6977218081 is 1808127796.

It is an interprime number because it is at equal distance from previous prime (6977218069) and next prime (6977218093).

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 6977218081 - 2⁷ = 6977217953 is a prime.

It is a super-2 number, since 2×6977218081² = 97363144299666645122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6977218481) 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, 6619225 + ... + 6620278.

It is an arithmetic number, because the mean of its divisors is an integer number (953244288).

Almost surely, 2^6977218081 is an apocalyptic number.

It is an amenable number.

6977218081 is a deficient number, since it is larger than the sum of its proper divisors (648736223).

6977218081 is a wasteful number, since it uses less digits than its factorization.

6977218081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13239551.

The product of its (nonzero) digits is 338688, while the sum is 49.

The square root of 6977218081 is about 83529.7436904963. The cubic root of 6977218081 is about 1910.8536776725.

The spelling of 6977218081 in words is "six billion, nine hundred seventy-seven million, two hundred eighteen thousand, eighty-one".