6313573778 has 4 divisors (see below), whose sum is σ = 9470360670. Its totient is φ = 3156786888.

The previous prime is 6313573757. The next prime is 6313573787. The reversal of 6313573778 is 8773753136.

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

It can be written as a sum of positive squares in only one way, i.e., 4116120649 + 2197453129 = 64157^2 + 46877^2 .

It is a super-2 number, since 2×6313573778² = 79722427700498386568, 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 as a sum of consecutive naturals, namely, 1578393443 + ... + 1578393446.

Almost surely, 2^6313573778 is an apocalyptic number.

6313573778 is a deficient number, since it is larger than the sum of its proper divisors (3156786892).

6313573778 is a wasteful number, since it uses less digits than its factorization.

6313573778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156786891.

The product of its digits is 2222640, while the sum is 50.

The square root of 6313573778 is about 79458.0000880969. Note that the first 4 decimals coincide. The cubic root of 6313573778 is about 1848.2402333897.

The spelling of 6313573778 in words is "six billion, three hundred thirteen million, five hundred seventy-three thousand, seven hundred seventy-eight".