6366777920 has 56 divisors (see below), whose sum is σ = 15483498624. Its totient is φ = 2492519936.

The previous prime is 6366777919. The next prime is 6366777931. The reversal of 6366777920 is 297776636.

It is a super-2 number, since 2×6366777920² = 81071722165199052800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196622 + ... + 226701.

Almost surely, 2^6366777920 is an apocalyptic number.

It is an amenable number.

6366777920 is an abundant number, since it is smaller than the sum of its proper divisors (9116720704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6366777920 is a wasteful number, since it uses less digits than its factorization.

6366777920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423387 (or 423377 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 53.

The square root of 6366777920 is about 79792.0918387280. The cubic root of 6366777920 is about 1853.4173911924.

The spelling of 6366777920 in words is "six billion, three hundred sixty-six million, seven hundred seventy-seven thousand, nine hundred twenty".