7678379057 has 4 divisors (see below), whose sum is σ = 7926068736. Its totient is φ = 7430689380.

The previous prime is 7678379011. The next prime is 7678379063. The reversal of 7678379057 is 7509738767.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7678379057 - 2¹⁴ = 7678362673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7678378987 and 7678379005.

It is not an unprimeable number, because it can be changed into a prime (7678379557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123844793 + ... + 123844854.

It is an arithmetic number, because the mean of its divisors is an integer number (1981517184).

Almost surely, 2^7678379057 is an apocalyptic number.

It is an amenable number.

7678379057 is a deficient number, since it is larger than the sum of its proper divisors (247689679).

7678379057 is a wasteful number, since it uses less digits than its factorization.

7678379057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247689678.

The product of its (nonzero) digits is 15558480, while the sum is 59.

The square root of 7678379057 is about 87626.3605144023. The cubic root of 7678379057 is about 1972.8308445173.

The spelling of 7678379057 in words is "seven billion, six hundred seventy-eight million, three hundred seventy-nine thousand, fifty-seven".