6377779969 has 16 divisors (see below), whose sum is σ = 7158787776. Its totient is φ = 5631558400.

The previous prime is 6377779927. The next prime is 6377779979. The reversal of 6377779969 is 9699777736.

It is a cyclic number.

It is not a de Polignac number, because 6377779969 - 2⁷ = 6377779841 is a prime.

It is a super-2 number, since 2×6377779969² = 81352154665955281922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6377779898 and 6377779907.

It is not an unprimeable number, because it can be changed into a prime (6377779979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71229 + ... + 133525.

It is an arithmetic number, because the mean of its divisors is an integer number (447424236).

Almost surely, 2^6377779969 is an apocalyptic number.

It is an amenable number.

6377779969 is a deficient number, since it is larger than the sum of its proper divisors (781007807).

6377779969 is a wasteful number, since it uses less digits than its factorization.

6377779969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62576.

The product of its digits is 189035532, while the sum is 70.

The square root of 6377779969 is about 79861.0040570490. The cubic root of 6377779969 is about 1854.4843701656.

It can be divided in two parts, 637777 and 9969, that added together give a palindrome (647746).

The spelling of 6377779969 in words is "six billion, three hundred seventy-seven million, seven hundred seventy-nine thousand, nine hundred sixty-nine".