77964845938 has 8 divisors (see below), whose sum is σ = 133654021632. Its totient is φ = 33413505396.

The previous prime is 77964845921. The next prime is 77964845941. The reversal of 77964845938 is 83954846977.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2784458770 + ... + 2784458797.

It is an arithmetic number, because the mean of its divisors is an integer number (16706752704).

Almost surely, 2^77964845938 is an apocalyptic number.

77964845938 is a deficient number, since it is larger than the sum of its proper divisors (55689175694).

77964845938 is a wasteful number, since it uses less digits than its factorization.

77964845938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568917576.

The product of its digits is 365783040, while the sum is 70.

The spelling of 77964845938 in words is "seventy-seven billion, nine hundred sixty-four million, eight hundred forty-five thousand, nine hundred thirty-eight".