75818072668 has 24 divisors (see below), whose sum is σ = 142952458880. Its totient is φ = 34977147840.

The previous prime is 75818072657. The next prime is 75818072717. The reversal of 75818072668 is 86627081857.

It is a happy number.

It is a congruent number.

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, 212748 + ... + 443731.

Almost surely, 2^75818072668 is an apocalyptic number.

It is an amenable number.

75818072668 is a deficient number, since it is larger than the sum of its proper divisors (67134386212).

75818072668 is a wasteful number, since it uses less digits than its factorization.

75818072668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658717 (or 658715 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 58.

The spelling of 75818072668 in words is "seventy-five billion, eight hundred eighteen million, seventy-two thousand, six hundred sixty-eight".