7673938778 has 16 divisors (see below), whose sum is σ = 12674716704. Its totient is φ = 3455553360.

The previous prime is 7673938763. The next prime is 7673938793. The reversal of 7673938778 is 8778393767.

It is an interprime number because it is at equal distance from previous prime (7673938763) and next prime (7673938793).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627625 + ... + 1632332.

It is an arithmetic number, because the mean of its divisors is an integer number (792169794).

Almost surely, 2^7673938778 is an apocalyptic number.

7673938778 is a deficient number, since it is larger than the sum of its proper divisors (5000777926).

7673938778 is a wasteful number, since it uses less digits than its factorization.

7673938778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260077.

The product of its digits is 74680704, while the sum is 65.

The square root of 7673938778 is about 87601.0204164312. The cubic root of 7673938778 is about 1972.4504860927.

The spelling of 7673938778 in words is "seven billion, six hundred seventy-three million, nine hundred thirty-eight thousand, seven hundred seventy-eight".