6777778951 has 8 divisors (see below), whose sum is σ = 6872097024. Its totient is φ = 6683500800.

The previous prime is 6777778919. The next prime is 6777778957. The reversal of 6777778951 is 1598777776.

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 6777778951 - 2⁵ = 6777778919 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 (6777778957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540351 + ... + 552751.

It is an arithmetic number, because the mean of its divisors is an integer number (859012128).

Almost surely, 2^6777778951 is an apocalyptic number.

6777778951 is a deficient number, since it is larger than the sum of its proper divisors (94318073).

6777778951 is a wasteful number, since it uses less digits than its factorization.

6777778951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19961.

The product of its digits is 36303120, while the sum is 64.

The square root of 6777778951 is about 82327.2673602130. The cubic root of 6777778951 is about 1892.4705661430.

The spelling of 6777778951 in words is "six billion, seven hundred seventy-seven million, seven hundred seventy-eight thousand, nine hundred fifty-one".