76945984778 has 64 divisors (see below), whose sum is σ = 128625649152. Its totient is φ = 34303357440.

The previous prime is 76945984741. The next prime is 76945984931. The reversal of 76945984778 is 87748954967.

It is a Curzon number.

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 in 31 ways as a sum of consecutive naturals, for example, 23015375 + ... + 23018717.

It is an arithmetic number, because the mean of its divisors is an integer number (2009775768).

Almost surely, 2^76945984778 is an apocalyptic number.

76945984778 is a deficient number, since it is larger than the sum of its proper divisors (51679664374).

76945984778 is a wasteful number, since it uses less digits than its factorization.

76945984778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679.

The product of its digits is 853493760, while the sum is 74.

The spelling of 76945984778 in words is "seventy-six billion, nine hundred forty-five million, nine hundred eighty-four thousand, seven hundred seventy-eight".