7960330778 has 4 divisors (see below), whose sum is σ = 11940496170. Its totient is φ = 3980165388.

The previous prime is 7960330759. The next prime is 7960330787. The reversal of 7960330778 is 8770330697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8770330697 = 43 ⋅203961179.

It can be written as a sum of positive squares in only one way, i.e., 7655025049 + 305305729 = 87493^2 + 17473^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1990082693 + ... + 1990082696.

Almost surely, 2^7960330778 is an apocalyptic number.

7960330778 is a deficient number, since it is larger than the sum of its proper divisors (3980165392).

7960330778 is a wasteful number, since it uses less digits than its factorization.

7960330778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980165391.

The product of its (nonzero) digits is 1333584, while the sum is 50.

The square root of 7960330778 is about 89220.6858189288. The cubic root of 7960330778 is about 1996.6887523450.

The spelling of 7960330778 in words is "seven billion, nine hundred sixty million, three hundred thirty thousand, seven hundred seventy-eight".