77964734312 has 16 divisors (see below), whose sum is σ = 146220473700. Its totient is φ = 38972608000.

The previous prime is 77964734303. The next prime is 77964734321. The reversal of 77964734312 is 21343746977.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (77964734303) and next prime (77964734321).

It can be written as a sum of positive squares in 2 ways, for example, as 47718654916 + 30246079396 = 218446^2 + 173914^2 .

It is a super-2 number, since 2×77964734312² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1185887 + ... + 1249902.

Almost surely, 2^77964734312 is an apocalyptic number.

It is an amenable number.

77964734312 is a deficient number, since it is larger than the sum of its proper divisors (68255739388).

77964734312 is a wasteful number, since it uses less digits than its factorization.

77964734312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439796 (or 2439792 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 53.

The spelling of 77964734312 in words is "seventy-seven billion, nine hundred sixty-four million, seven hundred thirty-four thousand, three hundred twelve".