77067961832 has 8 divisors (see below), whose sum is σ = 144502428450. Its totient is φ = 38533980912.

The previous prime is 77067961801. The next prime is 77067961837. The reversal of 77067961832 is 23816976077.

It can be written as a sum of positive squares in only one way, i.e., 68379112036 + 8688849796 = 261494^2 + 93214^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (77067961837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4816747607 + ... + 4816747622.

Almost surely, 2^77067961832 is an apocalyptic number.

It is an amenable number.

77067961832 is a deficient number, since it is larger than the sum of its proper divisors (67434466618).

77067961832 is a wasteful number, since it uses less digits than its factorization.

77067961832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9633495235 (or 9633495231 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 56.

The spelling of 77067961832 in words is "seventy-seven billion, sixty-seven million, nine hundred sixty-one thousand, eight hundred thirty-two".